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Tuesday, November 15, 2022

Racial segregation

From Wikipedia, the free encyclopedia
 
African-American man drinking from a "Colored" water cooler in streetcar terminal, Oklahoma City, July 1939.

Racial segregation is the systematic separation of people into racial or other ethnic groups in daily life. Racial segregation can amount to the international crime of apartheid and a crime against humanity under the Statute of the International Criminal Court. Segregation can involve the spatial separation of the races, and mandatory use of different institutions, such as schools and hospitals by people of different races. Specifically, it may be applied to activities such as eating in restaurants, drinking from water fountains, using public toilets, attending schools, going to films, riding buses, renting or purchasing homes or renting hotel rooms. In addition, segregation often allows close contact between members of different racial or ethnic groups in hierarchical situations, such as allowing a person of one race to work as a servant for a member of another race.

Segregation is defined by the European Commission against Racism and Intolerance as "the act by which a (natural or legal) person separates other persons on the basis of one of the enumerated grounds without an objective and reasonable justification, in conformity with the proposed definition of discrimination. As a result, the voluntary act of separating oneself from other people on the basis of one of the enumerated grounds does not constitute segregation". According to the UN Forum on Minority Issues, "The creation and development of classes and schools providing education in minority languages should not be considered impermissible segregation if the assignment to such classes and schools is of a voluntary nature."

Racial segregation has generally been outlawed worldwide. In the United States, racial segregation was mandated by law in some states (see Jim Crow laws) and enforced along with anti-miscegenation laws (prohibitions against interracial marriage), until the U.S. Supreme Court led by Chief Justice Earl Warren struck down racial segregationist laws throughout the United States. However, racial segregation may exist de facto through social norms, even when there is no strong individual preference for it, as suggested by Thomas Schelling's models of segregation and subsequent work. Segregation may be maintained by means ranging from discrimination in hiring and in the rental and sale of housing to certain races to vigilante violence (such as lynchings). Generally, a situation that arises when members of different races mutually prefer to associate and do business with members of their own race would usually be described as separation or de facto separation of the races rather than segregation.

Historic cases from ancient times to the 1960s

Imperial China

Tang dynasty

Several laws which enforced racial segregation of foreigners from Chinese were passed by the Han Chinese during the Tang dynasty. In 779 the Tang dynasty issued an edict which forced Uyghurs to wear their ethnic dress, stopped them from marrying Chinese females, and banned them from pretending to be Chinese. In 836, when Lu Chun was appointed as governor of Canton, he was disgusted to find Chinese living with foreigners and intermarriage between Chinese and foreigners. Lu enforced separation, banning interracial marriages, and made it illegal for foreigners to own property. Lu Chun believed his principles were just and upright. The 836 law specifically banned Chinese from forming relationships with "Dark peoples" or "People of colour", which was used to describe foreigners, such as "Iranians, Sogdians, Arabs, Indians, Malays, Sumatrans", among others.

Qing dynasty

The Qing dynasty was founded not by Han Chinese, who form the majority of the Chinese population, but by Manchus, who are today an ethnic minority of China. The Manchus were keenly aware of their minority status, however, it was only later in the dynasty that they banned intermarriage.

Han defectors played a massive role in the Qing conquest of China. Han Chinese Generals of the Ming Dynasty who defected to the Manchu were often given women from the Imperial Aisin Gioro family in marriage while the ordinary soldiers who defected were given non-royal Manchu women as wives. The Manchu leader Nurhaci married one of his granddaughters to the Ming General Li Yongfang after he surrendered Fushun in Liaoning to the Manchu in 1618. Jurchen (Manchu) women married most of the Han Chinese defectors in Liaodong. Aisin Gioro women were married to the sons of the Han Chinese Generals Sun Sike (Sun Ssu-k'o), Geng Jimao (Keng Chi-mao), Shang Kexi (Shang K'o-hsi), and Wu Sangui (Wu San-kuei).

A mass marriage of Han Chinese officers and officials to Manchu women numbering 1,000 couples was arranged by Prince Yoto and Hongtaiji in 1632 to promote harmony between the two ethnic groups.

Geng Zhongming, a Han bannerman, was awarded the title of Prince Jingnan, and his son Geng Jingmao managed to have both his sons Geng Jingzhong and Geng Zhaozhong become court attendants under Shunzhi and marry Aisin Gioro women, with Haoge's (a son of Hong Taiji) daughter marrying Geng Jingzhong and Prince Abatai's (Hong Taiji) granddaughter marrying Geng Zhaozhong.

The Qing differentiated between Han Bannermen and ordinary Han civilians. Han Bannermen were made out of Han Chinese who defected to the Qing up to 1644 and joined the Eight Banners, giving them social and legal privileges in addition to being acculturated to Manchu culture. So many Han defected to the Qing and swelled the ranks of the Eight Banners that ethnic Manchus became a minority within the Banners, making up only 16% in 1648, with Han Bannermen dominating at 75%. It was this multi-ethnic force in which Manchus were only a minority, which conquered China for the Qing.

It was Han Chinese Bannermen who were responsible for the successful Qing conquest of China, they made up the majority of governors in the early Qing and were the ones who governed and administered China after the conquest, stabilizing Qing rule. Han Bannermen dominated the post of governor-general in the time of the Shunzhi and Kangxi Emperors, and also the post of governors, largely excluding ordinary Han civilians from the posts.

To promote ethnic harmony, a 1648 decree from the Manchu Shunzhi Emperor allowed Han Chinese civilian men to marry Manchu women from the Banners with the permission of the Board of Revenue if they were registered daughters of officials or commoners or the permission of their banner company captain if they were unregistered commoners, it was only later in the dynasty that these policies allowing intermarriage were done away with.

The Qing implemented a policy of segregation between the Bannermen of the Eight Banners (Manchu Bannermen, Mongol Bannermen, Han Bannermen) and Han Chinese civilians. This ethnic segregation had cultural and economic reasons: intermarriage was forbidden to keep up the Manchu heritage and minimize sinicization. Han Chinese civilians and Mongol civilians were banned from settling in Manchuria. Han civilians and Mongol civilians were banned from crossing into each other's lands. Ordinary Mongol civilians in Inner Mongolia were banned from even crossing into other Mongol Banners. (A banner in Inner Mongolia was an administrative division and not related to the Mongol Bannermen in the Eight Banners)

These restrictions did not apply Han Bannermen, who were settled in Manchuria by the Qing. Han bannermen were differentiated from Han civilians by the Qing and treated differently.

The Qing Dynasty started colonizing Manchuria with Han Chinese later on in the dynasty's rule, but the Manchu area was still separated from modern-day Inner Mongolia by the Outer Willow Palisade, which kept the Manchu and the Mongols in the area separate.

The policy of segregation applied directly to the banner garrisons, most of which occupied a separate walled zone within the cities in which they were stationed. Manchu Bannermen, Han Bannermen, and Mongol Bannermen were separated from the Han civilian population. While the Manchus followed the governmental structure of the preceding Ming dynasty, their ethnic policy dictated that appointments were split between Manchu noblemen and Han Chinese civilian officials who had passed the highest levels of the state examinations, and because of the small number of Manchus, this insured that a large fraction of them would be government officials.

Colonial societies

Belgian Congo

Though there were no specific laws imposing racial segregation and barring Black people from establishments frequented by Whites, de facto segregation operated in most areas. For example, initially, the city centres were reserved to the White population only, while the Black population was organised in cités indigènes (indigenous neighbourhoods called 'le belge'). Hospitals, department stores, and other facilities were often reserved for either Whites or Blacks.

The Black population in the cities could not leave their houses from 2100 to 0400. This type of segregation began to disappear gradually only in the 1950s, but even then the Congolese remained or felt treated in many respects as second-rate citizens (for instance in political and legal terms).

From 1952, and even more so after the triumphant visit of King Baudouin to the colony in 1955, Governor-General Léon Pétillon (1952–1958) worked to create a "Belgian-Congolese community", in which Black and White people were to be treated as equals. Regardless, anti-miscegenation laws remained in place, and between 1959 and 1962 thousands of mixed-race Congolese children were forcibly deported from the Congo by the Belgian government and the Catholic Church and taken to Belgium.

French Algeria

Following its conquest of Ottoman controlled Algeria in 1830, for well over a century, France maintained colonial rule in the territory which has been described as "quasi-apartheid". The colonial law of 1865 allowed Arab and Berber Algerians to apply for French citizenship only if they abandoned their Muslim identity; Azzedine Haddour argues that this established "the formal structures of a political apartheid". Camille Bonora-Waisman writes that "in contrast with the Moroccan and Tunisian protectorates", this "colonial apartheid society" was unique to Algeria.

This "internal system of apartheid" met with considerable resistance from the Muslims affected by it, and is cited as one of the causes of the 1954 insurrection and ensuing independence war.

Rhodesia

Land apportionment in Rhodesia in 1965

The Land Apportionment Act of 1930 passed in Southern Rhodesia (now known as Zimbabwe) was a segregationist measure that governed land allocation and acquisition in rural areas, making distinctions between Blacks and Whites.

One highly publicised legal battle occurred in 1960 involving the opening of a new theatre that was to be open to all races; the proposed unsegregated public toilets at the newly built Reps Theatre in 1959 caused an argument called "The Battle of the Toilets".

Religious and racial antisemitism

Jews in Europe were generally forced, by decree or informal pressure, to live in highly segregated ghettos and shtetls. In 1204 the papacy required Jews to segregate themselves from Christians and wear distinctive clothing. Forced segregation of Jews spread throughout Europe during the 14th and 15th centuries. In the Russian Empire, Jews were restricted to the so-called Pale of Settlement, the Western frontier of the Russian Empire which roughly corresponds to the modern-day countries of Poland, Lithuania, Belarus, Moldova and Ukraine. By the early 20th century, the majority of Europe's Jews lived in the Pale of Settlement.

From the beginning of the 15th century, Jewish populations in Morocco were confined to mellahs. In cities, a mellah was surrounded by a wall with a fortified gateway. In contrast, rural mellahs were separate villages whose sole inhabitants were Jews.

In the middle of the 19th century, J. J. Benjamin wrote about the lives of Persian Jews:

…they are obliged to live in a separate part of town…; for they are considered as unclean creatures… Under the pretext of their being unclean, they are treated with the greatest severity, and should they enter a street, inhabited by Mussulmans, they are pelted by the boys and mobs with stones and dirt… For the same reason, they are prohibited to go out when it rains; for it is said the rain would wash dirt off them, which would sully the feet of the Mussulmans… If a Jew is recognized as such in the streets, he is subjected to the greatest insults. The passers-by spit in his face, and sometimes beat him… unmercifully… If a Jew enters a shop for anything, he is forbidden to inspect the goods… Should his hand incautiously touch the goods, he must take them at any price the seller chooses to ask for them... Sometimes the Persians intrude into the dwellings of the Jews and take possession of whatever please them. Should the owner make the least opposition in defense of his property, he incurs the danger of atoning for it with his life... If... a Jew shows himself in the street during the three days of the Katel (Muharram)…, he is sure to be murdered.

On 16 May 1940 in Norway, the Administrasjonsrådet asked the Rikskommisariatet why radio receivers had been confiscated from Jews in Norway. That Administrasjonsrådet thereafter "quietly" accepted racial segregation between Norwegian citizens, has been claimed by Tor Bomann-Larsen. Furthermore, he claimed that this segregation "created a precedent. 2 years later (with NS-styret in the ministries of Norway) Norwegian police arrested citizens at the addresses where radios had previously been confiscated from Jews.

Fascist Italy

In 1938, the fascist regime which was led by Benito Mussolini, under pressure from the Nazis, introduced a series of racial laws which instituted an official segregationist policy in the Italian Empire, which was especially directed against Italian Jews. This policy enforced various segregationist norms, like the laws which banned Jews from teaching or studying in ordinary schools and universities, owning industries that were reputed to be very important to the nation, working as journalists, entering the military, and marrying non-Jews. Some of the immediate consequences of the introduction of the 'provvedimenti per la difesa della razza' (norms for the defence of the race) included many of the best Italian scientists leaving their jobs, or even leaving Italy. Amongst these were the world-renowned physicists Emilio Segrè, Enrico Fermi (whose wife was Jewish), Bruno Pontecorvo, Bruno Rossi, Tullio Levi-Civita, mathematicians Federigo Enriques and Guido Fubini and even the fascist propaganda director, art critic and journalist Margherita Sarfatti, who was one of Mussolini's mistresses. Rita Levi-Montalcini, who would successively win the Nobel Prize for Medicine, was forbidden to work at the university. Albert Einstein, upon passage of the racial law, resigned from his honorary membership in the Accademia dei Lincei.

After 1943, when Northern Italy was occupied by the Nazis, Italian Jews were rounded up and became victims of the Holocaust.

Nazi Germany

"Nur für deutsche Fahrgäste" ("Only for German passengers") on the tram number 8 in German-occupied Kraków, Poland.

German praise for America's system of institutional racism, which was previously found in Adolf Hitler's Mein Kampf, was continuous throughout the early 1930s. The U.S. was the global leader in codified racism, and its race laws fascinated the Germans. The National Socialist Handbook for Law and Legislation of 1934–35, edited by Hitler's lawyer Hans Frank, contains a pivotal essay by Herbert Kier on the recommendations for race legislation which devoted a quarter of its pages to U.S. legislation—from segregation, race based citizenship, immigration regulations, and anti-miscegenation. This directly inspired the two principal Nuremberg Laws—the Citizenship Law and the Blood Law. The ban on interracial marriage (anti-miscegenation) prohibited sexual relations and marriages between people classified as "Aryan" and "non-Aryan". Such relationships were called Rassenschande (race defilement). At first the laws were aimed primarily at Jews but were later extended to "Gypsies, Negroes". Aryans found guilty could face incarceration in a Nazi concentration camp, while non-Aryans could face the death penalty. To preserve the so-called purity of the German blood, after the war began, the Nazis extended the race defilement law to include all foreigners (non-Germans).

Under the General Government of occupied Poland in 1940, the Nazis divided the population into different groups, each with different rights, food rations, allowed housing strips in the cities, public transportation, etc. In an effort to split Polish identity they attempted to establish ethnic divisions of Kashubians and Gorals (Goralenvolk), based on these groups' alleged "Germanic component".

During the 1930s and 1940s, Jews in Nazi-controlled states were made to wear something that identified them as Jewish, such as a yellow ribbon or star of David, and were, along with Romas (Gypsies), discriminated against by the racial laws. Jewish doctors were not allowed to treat Aryan patients nor were Jewish professors permitted to teach Aryan pupils. In addition, Jews were not allowed to use any public transportation, besides the ferry, and were able to shop only from 3–5 pm in Jewish stores. After Kristallnacht ("The Night of Broken Glass"), the Jews were fined 1,000,000 ℛℳ for damages done by the Nazi troops and SS members.

Women behind the barbed wire fence of the Lwów Ghetto in occupied Poland. Spring 1942

Jews, Poles, and Roma were subjected to genocide as "undesirable" racial groups in the Holocaust. The Nazis established ghettos to confine Jews and sometimes Romas into tightly packed areas of the cities of Eastern Europe, turning them into de facto concentration camps. The Warsaw Ghetto was the largest of these ghettos, with 400,000 people. The Łódź Ghetto was the second largest, holding about 160,000.

Between 1939 and 1945, at least 1.5 million Polish citizens were transported to the Reich for forced labour (in all, about 12 million forced laborers were employed in the German war economy inside Nazi Germany). Although Nazi Germany also used forced laborers from Western Europe, Poles, along with other Eastern Europeans viewed as racially inferior, were subject to deeper discriminatory measures. They were forced to wear a yellow with purple border and letter "P" (for Polen/Polish) cloth identifying tag sewn to their clothing, subjected to a curfew, and banned from public transportation.

While the treatment of factory workers or farm hands often varied depending on the individual employer, Polish laborers, as a rule, were compelled to work longer hours for lower wages than Western Europeans – in many cities, they were forced to live in segregated barracks behind barbed wire. Social relations with Germans outside work were forbidden, and sexual relations (Rassenschande or "racial defilement") were punishable by death.

Other cases

Canada

Indigenous peoples of Canada were treated in racially segregated hospitals called Indian hospitals or segregated wards in regular hospitals. Medical experimentation also occurred at these hospitals, frequently without consent, such as the testing of BCG vaccine on infants. Treatment at other hospitals provided a better quality of care for patients as:

Hundreds of new hospitals offered settler communities modern health care, and created tremendous opportunities for nurses and doctors. Indian Health Services had difficulty finding medical professionals willing to work for low civil service wages in its overcrowded and poorly equipped Indian hospitals. In several communities, the Indian and local hospitals were literally side by side. Indian hospitals reflected and constructed racial inequality by making it seemingly natural that modernized hospitals would be “white” hospitals, and that Indigenous people were somehow less worthy of care. Under the expanded postwar Indian hospital system, the cost of care continued to be half that of surrounding community hospitals’ rates, with dire consequences for Indigenous patients.

Germany

In fifteenth-century north-east Germany, people of Wendish, i.e. Slavic, origin were not allowed to join some guilds. According to Wilhelm Raabe, "down into the eighteenth century no German guild accepted a Wend."

South Africa

"Apartheid": sign on Durban beach in English, Afrikaans and Zulu, 1989

The apartheid system carried out by Afrikaner minority rule enacted a nationwide social policy "separate development" with the National Party victory in the 1948 general election, following the "colour bar"-discriminatory legislation dating back to the beginning of the Union of South Africa and the Boer republics before which, while repressive to Black South Africans along with other minorities, had not gone nearly so far.

Apartheid laws can be generally divided into following acts. Firstly, the Population Registration Act in 1950 classified residents in South Africa into four racial groups: "black", "white", "Coloured", and "Indian" and noted their racial identities on their identifications. Secondly, the Group Areas Act in 1950 assigned different regions according to different races. People were forced to live in their corresponding regions and the action of passing the boundaries without a permit was made illegal, extending pass laws that had already curtailed black movement. Thirdly, under the Reservation of Separate Amenities Act in 1953, amenities in public areas, like hospitals, universities and parks, were labeled separately according to particular races. In addition, the Bantu Education Act in 1953 segregated national education in South Africa as well. Additionally, the government of the time enforced the pass laws, which deprived Black South Africans of their right to travel freely within their own country. Under this system Black South Africans were severely restricted from urban areas, requiring authorisation from a white employer to enter.

Uprisings and protests against apartheid appeared immediately when apartheid arose. As early as 1949, the Youth League of the African National Congress (ANC) advocated the ending of apartheid and suggested fighting against racial segregation by various methods. During the following decades, hundreds of anti-apartheid actions occurred, including those of the Black Consciousness Movement, students' protests, labor strikes, and church group activism etc. In 1991, the Abolition of Racially Based Land Measures Act was passed, repealing laws enforcing racial segregation, including the Group Areas Act. In 1994, Nelson Mandela won in the first multiracial democratic election in South Africa. His success fulfilled the ending of apartheid in South African history.

United States

After the passage of Jim Crow laws which segregated African Americans and Whites, the people who were negatively affected by those laws saw no progress in their quest for equality. Racial segregation was not a new phenomenon, as illustrated by the fact that almost four million Blacks had been enslaved before the Civil War. The laws passed segregated African Americans from Whites in order to enforce a system of white supremacy. Signs were used to show non Whites where they could legally walk, talk, drink, rest, or eat. For those places that were racially mixed, Blacks had to wait until all White customers were dealt with. Rules were also enforced that restricted African Americans from entering white stores. Segregated facilities extended from white only schools to white-only graveyards.

After the Thirteenth Amendment abolished slavery in America, racial discrimination became regulated by the so-called Jim Crow laws, which mandated strict segregation of the races. Though many such laws were instituted shortly after fighting ended, they only became formalized after the 1877 end of the Reconstruction period. The period that followed is known as the nadir of American race relations. The legislation (or in some states, such as Florida, the state constitutions) that mandated segregation lasted at least until a 1968 ruling by the U.S. Supreme Court outlawing all forms of segregation.

Colored Sailors room in World War I

While the U.S. Supreme Court majority in the 1896 Plessy v. Ferguson case explicitly permitted "separate but equal" facilities (specifically, transportation facilities), Justice John Marshall Harlan, in his dissent, protested that the decision was an expression of white supremacy; he predicted that segregation would "stimulate aggressions ... upon the admitted rights of colored citizens", "arouse race hate", and "perpetuate a feeling of distrust between [the] races. Feelings between Whites and Blacks were so tense, even the jails were segregated."

Elected in 1912, President Woodrow Wilson tolerated the extension of segregation throughout the federal government that was already underway. In World War I, Blacks were drafted and served in the United States Army in segregated units. Black combat soldiers were often poorly trained and equipped, and new draftees were put on the front lines in dangerous missions. The U.S. military was still heavily segregated in World War II. The air force and the marines had no Blacks enlisted in their ranks. There were Blacks in the Navy Seabees. The army had only five African-American officers. In addition, no African-American would receive the Medal of Honor during the war, and their tasks in the war were largely reserved to noncombat units. Black soldiers had to sometimes give up their seats in trains to the Nazi prisoners of war.

A sign reading "We Cater to White Trade Only.
"We Cater to White Trade Only" sign on a restaurant window in Lancaster, Ohio, in 1938. In 1964 Martin Luther King Jr. was arrested and spent a night in jail for attempting to eat at a white-only restaurant in St. Augustine, Florida

A club central to the Harlem Renaissance in the 1920s, the Cotton Club in Harlem, New York City was a whites-only establishment, with Blacks (such as Duke Ellington) allowed to perform, but to a white audience. In the reception to honor his success at the 1936 Summer Olympics, Jesse Owens was not permitted to enter through the main doors of the Waldorf Astoria New York and instead forced to travel up to the event in a freight elevator. The first black Academy Award recipient Hattie McDaniel was not permitted to attend the premiere of Gone with the Wind at Loew's Grand Theatre, Atlanta, because of Georgia's segregation laws, and at the 12th Academy Awards ceremony at the Ambassador Hotel in Los Angeles she was required to sit at a segregated table at the far wall of the room; the hotel had a no-blacks policy, but allowed McDaniel in as a favor. Her final wish to be buried in Hollywood Cemetery was denied because the graveyard was restricted to Whites only.

On 11 September 1964, John Lennon announced The Beatles would not play to a segregated audience in Jacksonville, Florida. City officials relented following this announcement. A contract for a 1965 Beatles concert at the Cow Palace in California specifies that the band "not be required to perform in front of a segregated audience".

American sports were racially segregated until the mid-twentieth century. In baseball, the "Negro leagues" were established by Rube Foster for non-white players, such as Negro league baseball, which ran through the early 1950s. In basketball, the Black Fives (all-black teams) were established in 1904, and emerged in New York City, Washington, D.C., Chicago, Pittsburgh, Philadelphia, and other cities. Racial segregation in basketball lasted until 1950 when the NBA became racially integrated.

White tenants seeking to prevent Blacks from moving into the housing project erected this sign. Detroit, 1942

Many U.S. states banned interracial marriage. While opposed to slavery in the U.S, in a speech in Charleston, Illinois, in 1858, Abraham Lincoln stated, "I am not, nor ever have been in favor of bringing about in any way the social and political equality of the white and black races, that I am not, nor ever have been in favor of making voters or jurors of negroes, nor of qualifying them to hold office, nor to intermarry with white people. I as much as any man am in favor of the superior position assigned to the white race". In 1967, Mildred Loving, a black woman, and Richard Loving, a white man, were sentenced to a year in prison in Virginia for marrying each other. Their marriage violated the state's anti-miscegenation statute, the Racial Integrity Act of 1924, which prohibited marriage between people classified as white and people classified as "colored" (persons of non-white ancestry).

In the Loving v. Virginia case in 1967, the Supreme Court invalidated laws prohibiting interracial marriage in the U.S.

Rosa Parks being fingerprinted after being arrested for not giving up her seat on the bus to a white person.

Institutionalized racial segregation was ended as an official practice during the civil rights movement by the efforts of such civil rights activists as Clarence M. Mitchell Jr., Rosa Parks, Martin Luther King Jr. and James Farmer working for social and political freedom during the period from the end of World War II through the Interstate Commerce Commission desegregation order of 1961, the passage of the Civil Rights Act in 1964 and the Voting Rights Act in 1965 supported by President Lyndon B. Johnson. Many of their efforts were acts of non-violent civil disobedience aimed at disrupting the enforcement of racial segregation rules and laws, such as refusing to give up a seat in the black part of the bus to a white person (Rosa Parks), or holding sit-ins at all-white diners.

By 1968, all forms of segregation had been declared unconstitutional by the Supreme Court under Chief Justice Earl Warren, and by 1970 support for formal legal segregation had dissolved. The Warren Court's decision on landmark case Brown v. Board of Education of Topeka, Kansas in 1954 outlawed segregation in public schools, and its decision on Heart of Atlanta Motel, Inc. v. United States in 1964 prohibits racial segregation and discrimination in public institutions and public accommodations. The Fair Housing Act of 1968, administered and enforced by the Office of Fair Housing and Equal Opportunity, prohibited discrimination in the sale and rental of housing on the basis of race, color, national origin, religion, sex, familial status, and disability. Formal racial discrimination became illegal in school systems, businesses, the American military, other civil services and the government. However, implicit racism continues to this day through avenues like occupational segregation. In recent years, there has been a trend that reverses those efforts to desegregate schools made by those mandatory school desegregation orders.

Historic cases (1970s to present)

Bahrain

On 28 April 2007, the lower house of Bahraini Parliament passed a law banning unmarried migrant workers from living in residential areas. To justify the law, Nasser Fadhala, MP, a close ally of the government, said "bachelors also use these houses to make alcohol, run prostitute rings or to rape children and housemaids".

Sadiq Rahma, technical committee head, who is a member of Al Wefaq, said: "The rules we are drawing up are designed to protect the rights of both the families and the Asian bachelors (..) these labourers often have habits which are difficult for families living nearby to tolerate (..) they come out of their homes half dressed, brew alcohol illegally in their homes, use prostitutes and make the neighbourhood dirty (..) these are poor people who often live in groups of 50 or more, crammed into one house or apartment," said Mr Rahma. "The rules also state that there must be at least one bathroom for every five people (..) there have also been cases in which young children have been sexually molested."

Bahrain Centre for Human Rights issued a press release condemning this decision as discriminatory and promoting negative racist attitudes towards migrant workers. Nabeel Rajab, then BCHR vice president, said: "It is appalling that Bahrain is willing to rest on the benefits of these people's hard work, and often their suffering, but that they refuse to live with them in equality and dignity. The solution is not to force migrant workers into ghettos, but to urge companies to improve living conditions for workers – and not to accommodate large numbers of workers in inadequate space, and to improve the standard of living for them."

Canada

Until 1965, racial segregation in schools, stores and most aspects of public life existed legally in Ontario, Quebec and Nova Scotia, and informally in other provinces such as British Columbia.

Since the 1970s, there has been a concern expressed by some academics that major Canadian cities are becoming more segregated on income and ethnic lines. Reports have indicated that the inner suburbs of post-merger Toronto and the southern bedroom communities of Greater Vancouver have become steadily more immigrant and visible minority dominated communities and have lagged behind other neighbourhoods in average income. A CBC panel in Vancouver in 2012 discussed the growing public fear that the proliferation of ethnic enclaves in Greater Vancouver (such as Han Chinese in Richmond and Punjabis in Surrey) amounted to a type of self-segregation. In response to these fears, many minority activists have pointed out that most Canadian neighbourhoods remain predominately White, and yet white people are never accused of "self-segregation".

The Mohawk tribe of Kahnawake has been criticized for evicting non-Mohawks from the Mohawk reserve. Mohawks who marry outside of their tribal nation lose their right to live in their homelands. The Mohawk government claims that its policy of nationally exclusive membership is for the preservation of its identity, but there is no exemption for those who adopt Mohawk language or culture. The policy is based on a 1981 moratorium which was made law in 1984. All interracial couples are sent eviction notices regardless of how long they have lived on the reserve. The only exemption is for mixed national couples married before the 1981 moratorium.

Although some concerned Mohawk citizens contested the nationally exclusive membership policy, the Canadian Human Rights Tribunal ruled that the Mohawk government may adopt policies it deems necessary to ensure the survival of its people.

A long-standing practice of national segregation has also been imposed upon the commercial salmon fishery in British Columbia since 1992 when separate commercial fisheries were created for select aboriginal groups on three B.C. river systems. Canadians of other nations who fish in the separate fisheries have been arrested, jailed and prosecuted. Although the fishermen who were prosecuted were successful at trial in R v Kapp, this decision was overturned on appeal.

Fiji

Two military coups in Fiji in 1987 removed a democratically elected government led by Indo-Fijians. This coup was supported principally by the ethnic Fijian population.

A new constitution was promulgated in 1990, establishing Fiji as a republic, with the offices of President, Prime Minister, two-thirds of the Senate, and a clear majority of the House of Representatives reserved for ethnic Fijians; ethnic Fijian ownership of the land was also entrenched in the constitution. Most of these provisions were ended with the promulgation of the 1997 Constitution, although the President (and 14 of the 32 Senators) were still selected by the all-indigenous Great Council of Chiefs. The last of these distinctions were removed by the 2013 Constitution.

Fiji's case is a situation of de facto racial segregation, as Fiji has a long complex history of more than 3500 years as a divided tribal nation, with unification under 96 years of British rule also bringing other racial groups, particularly immigrants from the Indian subcontinent.

Israel

A barrier gate at Bil'in, West Bank, 2006

Israeli Declaration of Independence proclaims equal rights to all citizens regardless of ethnicity, denomination or race. Israel has a substantial list of laws that demand racial equality (such as prohibition of discrimination, equality in Employment, libel based on race or ethnicity.). There is however, in practice, significant institutional, legal, and societal discrimination against the country's Arab citizens.

In 2010, the Israeli Supreme Court sent a message against racial segregation in a case involving the Slonim Hassidic sect of the Ashkenazi Jews, ruling that segregation between Ashkenazi and Sephardi students in a school is illegal. They argue that they seek "to maintain an equal level of religiosity, not from racism" Responding to the charges, the Slonim Haredim invited Sephardi girls to school, and added in a statement: "All along, we said it's not about race, but the High Court went out against our rabbis, and therefore we went to prison."

Due to many cultural differences, and animosity towards a minority perceived to wish to annihilate Israel, a system of passively co-existing communities, segregated along ethnic lines has emerged in Israel, with Arab-Israeli minority communities being left "marooned outside the mainstream". This de facto segregation also exists between different Jewish ethnic groups ("edot") such as Sepharadim, Ashkenazim and Beta Israel (Jews of Ethiopian descent), which leads to de facto segregated schools, housing and public policy. The government has embarked on a program to shut down such schools, in order to force integration, but some in the Ethiopian community complained that not all such schools have been closed. In a 2007 poll commissioned by the Center Against Racism and conducted by the GeoCartographia Institute, 75% of Israeli Jews would not agree to live in a building with Arab residents, 60% would not accept any Arab visitors at their homes, 40% believed that Arabs should be stripped of their right to vote, and 59% believe that the culture of Arabs is primitive. In 2012, a public opinion poll showed that 53% of the polled Israeli Jews said they would not object to an Arab living in their building, while 42% said they would. Asked whether they would object to Arab children being in their child's class in school, 49% said they would not, 42% said they would. The secular Israeli public was found to be the most tolerant, while the religious and Haredi respondents were the most discriminatory.

Kenya

The end of British colonial rule in Kenya in 1964 led to an inadvertent increase in ethnic segregation. Through private purchases and government schemes, farmland previously held by European farmers was transferred to African owners. These farms were further sub-divided into smaller localities, and, due to joint migration, many adjacent localities were occupied by members of different ethnic groups. This separation along these boundaries persists today. Kimuli Kasara, in a study of recent ethnic violence in the wake of the disputed 2007-08 Kenyan elections, used these post-colonial boundaries as an instrument for the degree of ethnic segregation. Through a 2 Stage Least Squares Regression analysis, Kasara showed that increased ethnic segregation in Kenya's Rift Valley Province is associated with an increase in ethnic violence.

Liberia

The Constitution of Liberia limits Liberian nationality to Negro people (see also Liberian nationality law).

While Lebanese and Indian nationals are active in trading, as well as in the retail and service sectors, and Europeans and Americans work in the mining and agricultural sectors, these minority groups with long-tenured residence in the Republic are precluded from becoming citizens as a result of their race.

Malaysia

Malaysia has an article in its constitution which distinguishes the ethnic Malaysians and the non-ethnic Malaysian people—i.e. bumiputra—from the non-Bumiputra such as ethnic Chinese and Indians under the social contract, of which by law would guarantee the former certain special rights and privileges. To question these rights and privileges however is strictly prohibited under the Internal Security Act, legalised by the 10th Article(IV) of the Constitution of Malaysia. The privileges mentioned herein covers—few of which—the economical and education aspects of Malaysians, e.g. the Malaysian New Economic Policy; an economic policy recently criticised by Thierry Rommel—who headed a European Commission's delegation to Malaysia—as an excuse for "significant protectionism" and a quota maintaining higher access of Malays into public universities.

While legal racial segregation in daily life is not practiced, self-segregation does exist.

Mauritania

Slavery in Mauritania was finally criminalized in August 2007. It was already abolished in 1980, although it was still affecting the black Africans. The number of slaves in the country was not known exactly, but it was estimated to be up to 600,000 men, women and children, or 20% of the population.

For centuries, the so-called Haratin lower class, mostly poor black Africans living in rural areas, have been considered natural slaves by white Moors of Arab/Berber ancestry. Many descendants of the Arab and Berber tribes today still adhere to the supremacist ideology of their ancestors. This ideology has led to oppression, discrimination and even enslavement of other groups in the region of Sudan and Western Sahara.

United Kingdom

Although racial segregation was never made legal in the UK, occasionally pubs, workplaces, shops and other commercial premises operated a "colour bar" where non-white customers were banned from using certain rooms and facilities. Segregation also operated in the 20th century in certain professions, in housing and even at Buckingham Palace. The colour bar in pubs was deemed illegal by the Race Relations Act 1965 but other institutions such as members' clubs could still bar people because of their race until a few years later.

The United Kingdom nowadays has no legally sanctioned system of racial segregation and has a substantial list of laws that demand racial equality. However, due to many cultural differences between the pre-existing system of passively co-existing communities, segregation along racial lines has emerged in parts of the United Kingdom, with minority communities being left "marooned outside the mainstream".

The affected and 'ghettoised' communities are often largely representative of Pakistanis, Indians and other Sub-Continentals, and has been thought to be the basis of ethnic tensions, and a deterioration of the standard of living and levels of education and employment among ethnic minorities in poorer areas. These factors are considered by some to have been a cause of the 2001 English race riots in Bradford, Oldham and Harehills in northern England which have large Asian communities.

There may be some indication that such segregation, particularly in residential terms, seems to be the result of the unilateral 'steering' of ethnic groups into particular areas as well as a culture of vendor discrimination and distrust of ethnic minority clients by some estate agents and other property professionals. This may be indicative of a market preference amongst the more wealthy to reside in areas of less ethnic mixture; less ethnic mixture being perceived as increasing the value and desirability of a residential area. This is likely as other theories such as "ethnic self segregation" have sometimes been shown to be baseless, and a majority of ethnic respondents to a few surveys on the matter have been in favour of wider social and residential integration.

University of Michigan students arrested for protesting segregation in Ann Arbor; April 19, 1960.

United States

De facto segregation in the United States has increased since the civil rights movement, while official segregation has been outlawed. The Supreme Court ruled in Milliken v. Bradley (1974) that de facto racial segregation was acceptable, as long as schools were not actively making policies for racial exclusion; since then, schools have been segregated due to myriad indirect factors.

Redlining is part of how white communities maintained racist segregation. It is the practice of denying or increasing the cost of services, such as mortgages, banking, insurance, access to jobs, access to health care, or even supermarkets to residents in certain, often racially determined, areas. The most devastating form of redlining, and the most common use of the term, refer to mortgage discrimination. Over the next twenty years, a succession of further court decisions and federal laws, including the Home Mortgage Disclosure Act and measure to end mortgage discrimination in 1975, would completely invalidate de jure racial segregation and discrimination in the U.S., although de facto segregation and discrimination have proven more resilient. According to the Civil Rights Project at Harvard University, the actual de facto desegregation of U.S. public schools peaked in the late 1980s; since that time, the schools have, in fact, become more segregated mainly due to the ethnic segregation of the nation with whites dominating the suburbs and minorities the urban centers. According to Rajiv Sethi, an economist at Columbia University, black-white segregation in housing is slowly declining for most metropolitan areas in the US. Racial segregation or separation can lead to social, economic and political tensions. Thirty years (the year 2000) after the civil rights era, the United States remained in many areas a residentially segregated society, in which Blacks, whites and Hispanics inhabit different neighborhoods of vastly different quality.

Dan Immergluck writes that in 2002 small businesses in black neighborhoods still received fewer loans, even after accounting for businesses density, businesses size, industrial mix, neighborhood income, and the credit quality of local businesses. Gregory D. Squires wrote in 2003 that it is clear that race has long affected and continues to affect the policies and practices of the insurance industry. Workers living in American inner cities have a harder time finding jobs than suburban workers.

The desire of many whites to avoid having their children attend integrated schools has been a factor in white flight to the suburbs. A 2007 study in San Francisco showed that groups of homeowners of all races tended to self-segregate in order to be with people of the same education level and race. By 1990, the legal barriers enforcing segregation had been mostly replaced by decentralized racism, where white people pay more than black people to live in predominantly white areas. Today, many whites are willing to pay a premium to live in a predominantly white neighborhood. Equivalent housing in white areas commands a higher rent. These higher rents are largely attributable to exclusionary zoning policies that restrict the supply of housing. Regulations ensure that all housing units are expensive enough to prevent access by undesirable groups. By bidding up the price of housing, many white neighborhoods effectively shut out black people, because they may be unwilling, or unable, to pay the premium to buy entry into these expensive neighborhoods. Conversely, equivalent housing in black neighborhoods is far more affordable to those who are unable or unwilling to pay a premium to live in white neighborhoods. Through the 1990s, residential segregation remained at its extreme and has been called "hypersegregation" by some sociologists or "American Apartheid". In February 2005, the U.S. Supreme Court ruled in Johnson v. California 543 U.S. 499 (2005) that the California Department of Corrections' unwritten practice of racially segregating prisoners in its prison reception centers—which California claimed was for inmate safety (gangs in California, as throughout the U.S., usually organize on racial lines)—is to be subject to strict scrutiny, the highest level of constitutional review.

Yemen

In Yemen, the Arab elite practices a form of discrimination against the lower class Al-Akhdam people based on their racial characteristics.

History of birth control

From Wikipedia, the free encyclopedia

The history of birth control, also known as contraception and fertility control, refers to the methods or devices that have been historically used to prevent pregnancy. Planning and provision of birth control is called family planning. In some times and cultures, abortion had none of the stigma which it has today, making birth control less important.

Ancient World

Ancient Egypt

Birth control and abortion are well documented in Ancient Egypt. The Ebers Papyrus from 1550 BC and the Kahun Papyrus from 1850 BC have within them some of the earliest documented descriptions of birth control, the use of honey, acacia leaves and lint to be placed in the vagina to block sperm. Another early document explicitly referring to birth control methods is the Kahun Gynecological Papyrus from about 1850 BC. It describes various contraceptive pessaries, including acacia gum, which recent research has confirmed to have spermatocidal qualities and is still used in contraceptive jellies. Other birth control methods mentioned in the papyrus include the application of gummy substances to cover the "mouth of the womb" (i.e. the cervix), a mixture of honey and sodium carbonate applied to the inside of the vagina, and a pessary made from crocodile dung. Lactation (breast-feeding) of up to three years was also used for birth control purposes in ancient Egypt.

The Book of Genesis references withdrawal, or coitus interruptus, as a method of contraception when Onan "spills his seed" (ejaculates) on the ground so as to not father a child with his deceased brother's wife Tamar.

Ancient Greece and Rome

ancient coin depicting silphium
Ancient silver coin from Cyrene depicting a stalk of silphium

Silphium, a species of giant fennel native to north Africa, may have been used as an oral contraceptive in ancient Greece and the ancient Near East. The plant only grew on a small strip of land near the coastal city of Cyrene (located in modern-day Libya) and all attempts to cultivate it elsewhere resulted in failure. Silphium was primarily used for culinary purposes and its use as a contraceptive is far less documented than its use as a seasoning. Accounts of silphium's contraceptive effectiveness are probably greatly exaggerated. Possibly due to its supposed effectiveness and thus desirability, by the first century AD, it had become so rare that it was worth more than its weight in silver and, by late antiquity, it was fully extinct. Asafoetida, a close relative of siliphion, was also used for its contraceptive properties. Other plants commonly used for birth control in ancient Greece include Queen Anne's lace (Daucus carota), willow, date palm, pomegranate, pennyroyal, artemisia, myrrh, and rue. Some of these plants are toxic and ancient Greek documents specify safe dosages. Recent studies have confirmed the birth control properties of many of these plants, confirming for example that Queen Anne's lace has post coital anti-fertility properties. Queen Anne's lace is still used today for birth control in India.

According to Norman E. Himes, most methods of birth control used in antiquity were probably ineffective. The single most effective method of birth control known in antiquity was probably coitus interruptus. The ancient Greek philosopher Aristotle (c. 384–322 BC) recommended applying cedar oil to the womb before intercourse. Aristotle had no knowledge of how conception worked and he probably recommended this believing that the oil's smoothness would prevent conception. In actuality, this method may have sometimes been effective because the oil may have gummed up the external os and thereby reduced the motility of the sperm, but effectiveness would have been only occasional and highly variable. A Hippocratic text On the Nature of Women recommended that a woman who did not desire to conceive a child should drink a copper salt dissolved in water, which it claimed would prevent pregnancy for a year. This method is not only ineffective, but also dangerous, as the later medical writer Soranus of Ephesus (c. 98–138 AD) pointed out. Soranus attempted to list reliable methods of birth control. He took a rational approach to this, rejecting the use of superstition and amulets and instead prescribing common-sense mechanical methods such as vaginal plugs and pessaries using wool as a base covered in oils or other gummy substances. According to Himes, many of Soranus's methods were probably also ineffective.

China and India

In the 7th century BC, the Chinese physician Master Tung-hsuan documented both coitus reservatus and coitus obstructus, which prevents the release of semen during intercourse. However, it is not known if these methods were used primarily as birth control methods or to preserve the man's yang. In the medieval Tang Dynasty, Sun Simiao documented the "thousand of gold contraceptive prescription" for women who no longer want to bear children. This prescription, which was supposed to induce sterility, was made of oil and quicksilver heated together for one day and taken orally.

In India, Vatsyayana's classical text (2nd century AD) presented various contraceptive methods including coitus obstructus involving controlling the release of semen.

Ancient Americas

Medieval and early modern period

Early Persian Methods

In the late 9th to early 10th century, the Persian physician Muhammad ibn Zakariya al-Razi documented coitus interruptus, preventing ejaculation and the use of pessaries to block the cervix as birth control methods. He described a number of pessaries, including elephant dung, cabbages and pitch, used alone or in combination. During the same period Ali ibn Abbas al-Majusi (Persian) documented the use of pessaries made of rock salt for women for whom pregnancy may be dangerous. In the early 10th century the Persian Polymath Abu Ali al-Hussain ibn Abdallah ibn Sina (Persian), known in Europe as Avicenna, included a chapter on birth control in his medical encyclopedia The Canon of Medicine, listing 20 different methods of preventing conception. However, at least in the hadith Sahih Bukhari 34:432, the prophet Muhammad did not approve of preventative measures.

South Asia

Indians used a variety of birth control methods since ancient times, including a potion made of powdered palm leaf and red chalk, as well as pessaries made of honey, ghee, rock salt or the seeds of the palasa tree. A variety of birth control prescriptions, mainly made up of herbs and other plants, are listed in the 12th century Ratirahasya ("Secrets of Love") and in the 15th century Ananga Ranga ("The Stage of the God of Love").

Europe

In medieval western Europe, any efforts to halt or prevent pregnancy were deemed immoral by the Catholic Church. Women of the time still used a number of birth control measures such as coitus interruptus, inserting lily root and rue into the vagina, and infanticide after birth.

Historian John M. Riddle has advanced the hypothesis that women in classical antiquity, the Middle Ages, and the Early Modern period used herbs to control fertility. Historian Etienne van de Walle has quoted Riddle as stating that "most women" in the Middle Ages knew that certain herbs and herbal products could be taken to induce an abortion in the early stages of pregnancy and that this knowledge was primarily shared amongst women, thus affording them "more control over their lives than we thought possible". Riddle has further hypothesized that "these drugs were perfected over centuries in a female culture of which males—who were doing the writing—had only a partial and imperfect understanding" and it is this shared folk wisdom amongst women that explains the relatively static population size in the West before the 18th century, rather than the high rate of infant mortality. Several historians have taken issue with this hypothesis: Gary Ferngren has noted the circumstantial nature of Riddle's evidence and concluded that the ideas remained "unproved and unlikely," while Helen King has written that Riddle makes claims about modern pharmacology that are not supported by his source materials. Demographer Gigi Santow also takes issue with the proposition, writing that it overemphasizes the role of herbs and stating that Riddle seeks "not so much to persuade as to convert."

On December 5, 1484, Pope Innocent VIII issued the Summis desiderantes affectibus, a papal bull in which he recognized the existence of witches and gave full papal approval for the Inquisition to proceed "correcting, imprisoning, punishing and chastising" witches "according to their deserts". In the bull, which is sometimes referred to as the "Witch-Bull of 1484", the witches were explicitly accused of having "slain infants yet in the mother's womb" (abortion) and of "hindering men from performing the sexual act and women from conceiving" (contraception). Famous texts that served to guide the witch hunt and instruct magistrates on how to find and convict so-called "witches" include the Malleus Maleficarum, and Jean Bodin's De la Demonomanie des Sorciers. The Malleus Maleficarum was written by the priest J. Sprenger (born in Rheinfelden, today Switzerland), who was appointed by Pope Innocent VIII as the General Inquisitor for Germany around 1475, and H. Institoris, who at the time was inquisitor for Tyrol, Salzburg, Bohemia and Moravia. The authors accused witches, among other things, of infanticide and having the power to steal men's penises.

Barrier methods such as the condom have been around much longer, but were seen primarily as a means of preventing sexually transmitted diseases, not pregnancy. Casanova in the 18th century was one of the first reported using "assurance caps" to prevent impregnating his mistresses. In 1909, Richard Richter developed the first intrauterine device made from silkworm gut which was further developed and marketed in Germany by Ernst Gräfenberg in the late 1920s.

Modern birth control movement

a cartoon of a woman being chased by a stork with a baby
"And the villain still pursues her", a satirical Victorian era postcard

Birth control became a contested political issue in Britain during the 19th century. Thomas Malthus, an Anglican clergyman, statistician, and economist, argued in An Essay on the Principle of Population (1798) that population growth generally expanded exponentially in times and in regions of plenty until the size of the population quickly outstripped resources of subsistence. According to him, there were two types of checks that served to hold population within resource limits: positive checks, which raise the death rate; and preventive ones, which lower the birth rate. The positive checks include hunger, disease and war; the preventive checks, abortion, birth control, prostitution, postponement of marriage and celibacy. As a clergyman Malthus condemned birth control as "morally indefensible along with infanticide, abortion, and adultery." Malthus later elaborated his contention that human misery (e.g., hunger, disease, and war) was the principal limitation on population growth and would inevitably afflict society along with volatile boom-and-bust economic cycles. He suggested that paradoxically, efforts to alleviate poverty, such as workhouses, were futile and misguided since they would ultimately only result in subsequent growth in population. Instead Malthus recommended the preventive checks of sexual continence (chastity) and later marriages, which would produce both higher standards of living and greater economic stability without violating Christian morality.

Malthus's ideas came to carry great weight in British political debate in the 19th century, and they heavily influenced the movement toward the adoption of laissez-faire liberal capitalism. Malthusians were in favour of limiting population growth and began actively promoting birth control through a variety of groups. The term 'voluntary motherhood' was coined by feminists in the 1870s as a political critique of "involuntary motherhood" and as expressing a desire for women's emancipation. Advocates for voluntary motherhood disapproved of contraception, arguing that women should only engage in sex for the purpose of procreation and advocated periodic or permanent abstinence.

In contrast, the birth control movement advocated for contraception so as to permit sexual intercourse as desired without the risk of pregnancy. By emphasising "control", the birth control movement argued that women should have control over their reproduction - the movement was closely tied to the emerging feminist movement. The Malthusian League was established in 1877 and promoted the education of the public about the importance of family planning and advocated for the elimination of penalties against the promoters of birth control. It was initially founded during the "Knowlton trial" of Annie Besant and Charles Bradlaugh in July 1877. They were prosecuted for publishing Charles Knowlton's Fruits of Philosophy which explained various methods of birth control. Besant and Bradlaugh wrote that it was "...more moral to prevent the conception of children, than, after they are born, to murder them by want of food, air and clothing." The trial of Bradlaugh and Besant counter-productively triggered a wave of public interest in contraception, and book sales of Knowlton's book surged.

This page from Sanger's Family Limitation, 1917 edition, describes a cervical cap.

Starting in the 1880s, birth rates began to drop steadily in the industrialized countries, as women married later and families in urban living conditions increasingly favoured having fewer children. This trend was particularly acute in the United Kingdom, where birth rates declined from almost 35.5 births per 1,000 in the 1870s to about 29 per 1,000 by 1900. While the cause is uncertain, the 29% decline within a generation shows that the birth control methods Victorian women used were effective. Many women were educated about contraception and how to avoid pregnancy. While the rhythm method was not yet understood, condoms and diaphragms made of vulcanized rubber were reliable and inexpensive.

In the United States, contraception had been legal throughout most of the 19th century, but in the 1870s the Comstock Act and various state Comstock laws outlawed the distribution of information about safe sex and contraception and the use of contraceptives. Margaret Sanger and Otto Bobsein popularised the phrase "birth control" in 1914. Sanger was mainly active in the United States, but had gained an international reputation by the 1930s. Sanger established a short lived birth control clinic in 1916, which was shut down just nine days later. Sanger was arrested for distributing contraceptives, and went on trial. Here as well, the publicity surrounding the arrest, trial, and appeal sparked birth control activism across the United States, and earned the support of numerous donors, who would provide her with funding and support for future endeavors. She went on to found the first birth control league in America in 1921.

Cover of Marie Stopes's bestseller, Married Love.

The first permanent birth control clinic was established in Britain in 1921 by the birth control campaigner Marie Stopes, in collaboration with the Malthusian League. Stopes, who exchanged ideas with Sanger, wrote her book Married Love on birth control in 1918; - it was eventually published privately due to its controversial nature. The book was an instant success, requiring five editions in the first year  and elevating Stopes to a national figure. Its success was followed up with Wise Parenthood: a Book for Married People, a manual on birth control, published later that year. She originally tried to publicize her message through the dissemination of pamphlets in the slums of East London, but this approach failed to work, as the working class was too mistrustful of well-intentioned meddlers at the time.

In 1921, after years of planning, Stopes and her husband Humphrey Verdon Roe opened the Mothers' Clinic in Holloway, North London. The clinic, run by midwives and supported by visiting doctors, offered mothers birth control advice and taught them the use of a cervical cap. Later in the same year, Stopes founded the Society for Constructive Birth Control and Racial Progress, a support organization for the clinic. Her clinic made contraception acceptable during the 1920s by framing it in scientific terms and gained an international reputation. The Malthusian League opened up a second clinic shortly afterward, but admitted that Stopes clinic had been the first in the British Empire, although the League emphasised that theirs was the first scientific clinic where birth control instruction was given under medical supervision (the medical officer was Norman Haire). These two clinics 'opened up a new period in the history of the movement aimed at the emancipation of women from their slavery to the reproductive function'. Although the clinic helped few patients in 1921 'the year was one of the most important in the whole history of birth control simply because of their very existence'.

Throughout the 1920s, Stopes and other feminist pioneers, including Dora Russell and Stella Browne, played a major role in breaking down taboos about sex and increasing knowledge, pleasure and improved reproductive health. Stopes was particularly influential in helping emerging birth control movements in a number of British colonies like India. In 1930 the National Birth Control Council was formed. Stella Browne's initial activism was limited to giving speaking tour across the country, providing information on birth control, women's health problems, problems related to puberty and sex education. In 1929 began to openly call for the legalization of abortion, during her lecture in front of the World Sexual Reform Congress in London. In April 1930 the Birth Control Conference assembled 700 delegates and was successful in bringing birth control and abortion into the political sphere - three months later, HM Ministry of Health allowed local authorities to give birth control advice in welfare centres.

In India, Mathematics Professor Raghunath Dhondo Karve, elder son of Maharshi Dhondo Keshav Karve, opened India's First Birth Control Clinic in 1921 in Mumbai (Bombay Presidency of British India), he also published a Marathi monthly magazine Samaj Swasthya (समाजस्वास्थ्य) starting from July 1927 until 1953.

The societal acceptance of birth control required the separation of sexual activity from procreation, making birth control a highly controversial subject in some countries at some points in the 20th century. Birth control also became a major theme in feminist politics; reproduction issues were cited as examples of women's powerlessness to exercise their rights. Starting in the 1930s and intensifying in the '60s and '70s, the birth control movement advocated for the legalisation of abortion and large scale education campaigns about contraception by governments. In a broader context birth control became an arena for conflict between liberal and conservative values, raising questions about family, personal freedom, state intervention, religion in politics, sexual morality and social welfare.

Late 20th century

Gregory Pincus and John Rock, with help from the Planned Parenthood Federation of America, developed the first birth control pills in the 1950s, which became publicly available in the 1960s.

Medical abortion became an alternative to surgical abortion with the availability of prostaglandin analogs in the 1970s and the availability of mifepristone in the 1980s.

In 1965, the Supreme Court of the United States ruled in the case Griswold v. Connecticut that a Connecticut law prohibiting the use of contraceptives violated the constitutional "right to marital privacy". In 1972, the case Eisenstadt v. Baird expanded the right to possess and use contraceptives to unmarried couples.

In France, the 1920 Birth Law contained a clause that criminalized dissemination of birth-control literature. That law, however, was annulled in 1967 by the Neuwirth Law, thus authorizing contraception, which was followed in 1975 with the Veil Law. Women fought for reproductive rights and they helped end the nation's ban on birth control in 1965. In 1994, 5% of French women aged 20 to 49 who were at risk of unintended pregnancy did not use contraception.

The availability of contraception in the Republic of Ireland was illegal in the Irish Free State (later the Republic of Ireland) from 1935 until 1980, when it was legalised with strong restrictions, later loosened. This reflected Catholic teachings on sexual morality. In Italy women gained the right to access birth control information in 1970.

In the Soviet Union birth control was made readily available to facilitate social equality between men and women. Alexandra Kollontai, USSR commissar for public welfare, promoted birth control education for adults. In Eastern Europe and Russia, natality fell abruptly after the dissolution of the Soviet Union.

A recent, well-studied example of governmental restriction of birth control in order to promote higher birth rates in Ceaușescu-era Romania. The surge in births resulting from Decree 770 led to great hardships for children and parents, matched by an increase in illegal abortions.

Monday, November 14, 2022

Coding region

From Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Coding_region

The coding region of a gene, also known as the coding sequence (CDS), is the portion of a gene's DNA or RNA that codes for protein. Studying the length, composition, regulation, splicing, structures, and functions of coding regions compared to non-coding regions over different species and time periods can provide a significant amount of important information regarding gene organization and evolution of prokaryotes and eukaryotes. This can further assist in mapping the human genome and developing gene therapy.

Definition

Although this term is also sometimes used interchangeably with exon, it is not the exact same thing: the exon is composed of the coding region as well as the 3' and 5' untranslated regions of the RNA, and so therefore, an exon would be partially made up of coding regions. The 3' and 5' untranslated regions of the RNA, which do not code for protein, are termed non-coding regions and are not discussed on this page.

There is often confusion between coding regions and exomes and there is a clear distinction between these terms. While the exome refers to all exons within a genome, the coding region refers to a singular section of the DNA or RNA which specifically codes for a certain kind of protein.  

History

In 1978, Walter Gilbert published "Why Genes in Pieces" which first began to explore the idea that the gene is a mosaic—that each full nucleic acid strand is not coded continuously but is interrupted by "silent" non-coding regions. This was the first indication that there needed to be a distinction between the parts of the genome that code for protein, now called coding regions, and those that do not.

Composition

Point mutation types: transitions (blue) are elevated compared to transversions (red) in GC-rich coding regions.

The evidence suggests that there is a general interdependence between base composition patterns and coding region availability. The coding region is thought to contain a higher GC-content than non-coding regions. There is further research that discovered that the longer the coding strand, the higher the GC-content. Short coding strands are comparatively still GC-poor, similar to the low GC-content of the base composition translational stop codons like TAG, TAA, and TGA.

GC-rich areas are also where the ratio point mutation type is altered slightly: there are more transitions, which are changes from purine to purine or pyrimidine to pyrimidine, compared to transversions, which are changes from purine to pyrimidine or pyrimidine to purine. The transitions are less likely to change the encoded amino acid and remain a silent mutation (especially if they occur in the third nucleotide of a codon) which is usually beneficial to the organism during translation and protein formation.

This indicates that essential coding regions (gene-rich) are higher in GC-content and more stable and resistant to mutation compared to accessory and non-essential regions (gene-poor). However, it is still unclear whether this came about through neutral and random mutation or through a pattern of selection. There is also debate on whether the methods used, such as gene windows, to ascertain the relationship between GC-content and coding region are accurate and unbiased.

Structure and function

Transcription: RNA Polymerase (RNAP) uses a template DNA strand and begins coding at the promoter sequence (green) and ends at the terminator sequence (red) in order to encompass the entire coding region into the pre-mRNA (teal). The pre-mRNA is polymerised 5' to 3' and the template DNA read 3' to 5'
 
An electron-micrograph of DNA strands decorated by hundreds of RNAP molecules too small to be resolved. Each RNAP is transcribing an RNA strand, which can be seen branching off from the DNA. "Begin" indicates the 3' end of the DNA, where RNAP initiates transcription; "End" indicates the 5' end, where the longer RNA molecules are completely transcribed.

In DNA, the coding region is flanked by the promoter sequence on the 5' end of the template strand and the termination sequence on the 3' end. During transcription, the RNA Polymerase (RNAP) binds to the promoter sequence and moves along the template strand to the coding region. RNAP then adds RNA nucleotides complementary to the coding region in order to form the mRNA, substituting uracil in place of thymine. This continues until the RNAP reaches the termination sequence.

After transcription and maturation, the mature mRNA formed encompasses multiple parts important for its eventual translation into protein. The coding region in an mRNA is flanked by the 5' untranslated region (5'-UTR) and 3' untranslated region (3'-UTR), the 5' cap, and Poly-A tail. During translation, the ribosome facilitates the attachment of the tRNAs to the coding region, 3 nucleotides at a time (codons). The tRNAs transfer their associated amino acids to the growing polypeptide chain, eventually forming the protein defined in the initial DNA coding region.

The coding region (teal) is flanked by untranslated regions, the 5' cap, and the poly(A) tail which together form the mature mRNA.

Regulation

The coding region can be modified in order to regulate gene expression.

Alkylation is one form of regulation of the coding region. The gene that would have been transcribed can be silenced by targeting a specific sequence. The bases in this sequence would be blocked using alkyl groups, which create the silencing effect.

While the regulation of gene expression manages the abundance of RNA or protein made in a cell, the regulation of these mechanisms can be controlled by a regulatory sequence found before the open reading frame begins in a strand of DNA. The regulatory sequence will then determine the location and time that expression will occur for a protein coding region.

RNA splicing ultimately determines what part of the sequence becomes translated and expressed, and this process involves cutting out introns and putting together exons. Where the RNA spliceosome cuts, however, is guided by the recognition of splice sites, in particular the 5' splicing site, which is one of the substrates for the first step in splicing. The coding regions are within the exons, which become covalently joined together to form the mature messenger RNA.

Mutations

Mutations in the coding region can have very diverse effects on the phenotype of the organism. While some mutations in this region of DNA/RNA can result in advantageous changes, others can be harmful and sometimes even lethal to an organism's survival. In contrast, changes in the coding region may not always result in detectable changes in phenotype.

Mutation types

Examples of the various forms of point mutations that may exist within coding regions. Such alterations may or may not have phenotypic changes, depending on whether or not they code for different amino acids during translation.

There are various forms of mutations that can occur in coding regions. One form is silent mutations, in which a change in nucleotides does not result in any change in amino acid after transcription and translation. There also exist nonsense mutations, where base alterations in the coding region code for a premature stop codon, producing a shorter final protein. Point mutations, or single base pair changes in the coding region, that code for different amino acids during translation, are called missense mutations. Other types of mutations include frameshift mutations such as insertions or deletions.

Formation

Some forms of mutations are hereditary (germline mutations), or passed on from a parent to its offspring. Such mutated coding regions are present in all cells within the organism. Other forms of mutations are acquired (somatic mutations) during an organisms lifetime, and may not be constant cell-to-cell. These changes can be caused by mutagens, carcinogens, or other environmental agents (ex. UV). Acquired mutations can also be a result of copy-errors during DNA replication and are not passed down to offspring. Changes in the coding region can also be de novo (new); such changes are thought to occur shortly after fertilization, resulting in a mutation present in the offspring's DNA while being absent in both the sperm and egg cells.

Prevention

There exist multiple transcription and translation mechanisms to prevent lethality due to deleterious mutations in the coding region. Such measures include proofreading by some DNA Polymerases during replication, mismatch repair following replication, and the 'Wobble Hypothesis' which describes the degeneracy of the third base within an mRNA codon.

Constrained coding regions (CCRs)

While it is well known that the genome of one individual can have extensive differences when compared to the genome of another, recent research has found that some coding regions are highly constrained, or resistant to mutation, between individuals of the same species. This is similar to the concept of interspecies constraint in conserved sequences. Researchers termed these highly constrained sequences constrained coding regions (CCRs), and have also discovered that such regions may be involved in high purifying selection. On average, there is approximately 1 protein-altering mutation every 7 coding bases, but some CCRs can have over 100 bases in sequence with no observed protein-altering mutations, some without even synonymous mutations. These patterns of constraint between genomes may provide clues to the sources of rare developmental diseases or potentially even embryonic lethality. Clinically validated variants and de novo mutations in CCRs have been previously linked to disorders such as infantile epileptic encephalopathy, developmental delay and severe heart disease.

Coding sequence detection

While identification of open reading frames within a DNA sequence is straightforward, identifying coding sequences is not, because the cell translates only a subset of all open reading frames to proteins. Currently CDS prediction uses sampling and sequencing of mRNA from cells, although there is still the problem of determining which parts of a given mRNA are actually translated to protein. CDS prediction is a subset of gene prediction, the latter also including prediction of DNA sequences that code not only for protein but also for other functional elements such as RNA genes and regulatory sequences.

In both prokaryotes and eukaryotes, gene overlapping occurs relatively often in both DNA and RNA viruses as an evolutionary advantage to reduce genome size while retaining the ability to produce various proteins from the available coding regions. For both DNA and RNA, pairwise alignments can detect overlapping coding regions, including short open reading frames in viruses, but would require a known coding strand to compare the potential overlapping coding strand with. An alternative method using single genome sequences would not require multiple genome sequences to execute comparisons but would require at least 50 nucleotides overlapping in order to be sensitive.

Lie point symmetry

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