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Saturday, March 9, 2019

Blood libel

From Wikipedia, the free encyclopedia

Blood libel or ritual murder libel (also blood accusation) is an antisemitic canard accusing Jews of kidnapping and murdering Christian children in order to use their blood as part of religious rituals. Historically, these claims—alongside those of well poisoning and host desecration—have been a major theme of the persecution of Jews in Europe

Blood libels typically say that Jews require human blood for the baking of matzos for Passover, although this element was allegedly absent in the earliest cases which claimed that then-contemporary Jews reenacted the crucifixion. The accusations often assert that the blood of the children of Christians is especially coveted, and, historically, blood libel claims have been made in order to account for the otherwise unexplained deaths of children. In some cases, the alleged victim of human sacrifice has become venerated as a martyr, a holy figure around whom a martyr sect might arise. Three of these – William of Norwich, Little Saint Hugh of Lincoln, and Simon of Trent – became objects of local sects and veneration, and in some cases they were added to the General Roman Calendar. One, Gavriil Belostoksky, was canonized by the Russian Orthodox Church.

In Jewish lore, blood libels were the impetus for the creation of the Golem of Prague by Rabbi Judah Loew ben Bezalel in the 16th century. According to Walter Laqueur:
Altogether, there have been about 150 recorded cases of blood libel (not to mention thousands of rumors) that resulted in the arrest and killing of Jews throughout history, most of them in the Middle Ages. In almost every case, Jews were murdered, sometimes by a mob, sometimes following torture and a trial.
The term 'blood libel' has also been used to refer to any unpleasant or damaging false accusation, and it has taken on a broader metaphorical meaning. However, this usage remains controversial, and Jewish groups have objected to such usage.

Jewish law against murder, sacrifice, and consumption of blood

It has been one of history's cruel ironies that the blood libel — accusations against Jews using the blood of murdered gentile children for the making of wine and matzot — became the false pretext for numerous pogroms. And due to the danger, those who live in a place where blood libels occur are halachically exempted from using red wine, lest it be seized as "evidence" against them.
— Pesach: What We Eat and Why We Eat It, Project Genesis

The supposed torture and human sacrifice alleged in the blood libels run contrary to the teachings of Judaism. According to the Bible, God commanded Abraham in the Binding of Isaac to sacrifice his son, but He ultimately provided a ram as a substitute. The Ten Commandments in the Torah forbid murder. In addition, the use of blood (human or otherwise) in cooking is prohibited by the kosher dietary laws (kashrut). Blood from slaughtered animals may not be consumed, and it must be drained out of the animal and covered with earth (Leviticus 17:12-13). According to the Book of Leviticus, blood from sacrificed animals may only be placed on the altar of the Great Temple in Jerusalem (which no longer existed at the time of the Christian blood libels). Furthermore, the consumption of human flesh would violate kashrut.

Also stated in Leviticus is that "it shall be a perpetual statute throughout your generations, in all your settlements: you must not eat any fat or any blood," and that "you must not eat any blood whatever, either of bird or of animal, in any of your settlements."

While animal sacrifice was part of the practice of ancient Judaism, the Tanakh (Old Testament) and Jewish teachings portray human sacrifice as one of the evils that separated the pagans of Canaan from the Hebrews (Deuteronomy 12:31, 2 Kings 16:3). Jews were prohibited from engaging in these rituals and they were also punished for doing so (Exodus 34:15, Leviticus 20:2, Deuteronomy 18:12, Jeremiah 7:31). In fact, ritual cleanliness for priests even prohibited them from being in the same room with a human corpse (Leviticus 21:11).

History

The earliest versions of the accusation involved Jews crucifying Christian children on Easter/Passover because of a prophecy. There is no reference to the use of blood in unleavened matzo bread, which evolves later as a major motivation for the crime.

Possible precursors

The earliest known example of a blood libel is from a certain Democritus (not the philosopher) only mentioned by the Suda, who alleged that "every seven years the Jews captured a stranger, brought him to the temple in Jerusalem, and sacrificed him, cutting his flesh into bits." The Graeco-Egyptian author Apion claimed that Jews sacrificed Greek victims in their temple. This accusation is known from Josephus' rebuttal of it in Against Apion. Apion states that when Antiochus Epiphanes entered the temple in Jerusalem, he discovered a Greek captive who told him that he was being fattened for sacrifice. Every year, Apion claimed, the Jews would sacrifice a Greek and consume his flesh, at the same time swearing eternal hatred towards the Greeks. Apion's claim probably repeats ideas already in circulation because similar claims are made by Posidonius and Apollonius Molon in the 1st century BCE. Another example concerns the murder of a Christian boy by a group of Jewish youths. Socrates Scholasticus (fl. 5th century) reported that some Jews in a drunken frolic bound a Christian child on a cross in mockery of the death of Christ and scourged him until he died.

Professor Israel Jacob Yuval of the Hebrew University of Jerusalem published an article in 1993 which argues that the blood libel may have originated in the 12th century from Christian views of Jewish behavior during the First Crusade. Some Jews committed suicide and killed their own children rather than be subjected to forced conversions. Yuval investigated Christian reports of these events and stated that they were greatly distorted with claims that if Jews could kill their own children, they could also kill the children of Christians. Yuval rejects the blood libel story as a fantasy of some Christians which could not contain any element of truth in it due to the precarious nature of the Jewish minority's existence in Christian Europe.

Origins in England

The crucifixion of William of Norwich depicted on a rood screen in Holy Trinity church, Loddon, Norfolk

In England in 1144, the Jews of Norwich were accused of ritual murder after a boy, William of Norwich, was found dead with stab wounds in the woods. William's hagiographer, Thomas of Monmouth, claimed that every year there is an international council of Jews at which they choose the country in which a child will be killed during Easter, because of a Jewish prophecy that states that the killing of a Christian child each year will ensure that the Jews will be restored to the Holy Land. In 1144, England was chosen, and the leaders of the Jewish community delegated the Jews of Norwich to perform the killing. They then abducted and crucified William. The legend was turned into a cult, with William acquiring the status of a martyr and pilgrims bringing offerings to the local church.

This was followed by similar accusations in Gloucester (1168), Bury St Edmunds (1181) and Bristol (1183). In 1189, the Jewish deputation attending the coronation of Richard the Lionheart was attacked by the crowd. Massacres of Jews at London and York soon followed. In 1190 on 16 March 150 Jews were attacked in York and then massacred when they took refuge in the royal castle, where Clifford's Tower now stands, with some committing suicide rather than being taken by the mob. The remains of 17 bodies thrown in a well in Norwich between the 12th and 13th century (five that were shown by DNA testing to likely be members of a single Jewish family) were very possibly killed as part of one of these pogroms.

After the death of Little Saint Hugh of Lincoln, there were trials and executions of Jews. The case is mentioned by Matthew Paris and Chaucer, and thus has become well-known. Its notoriety sprang from the intervention of the Crown, the first time an accusation of ritual killing had been given royal credibility. 

The eight-year-old Hugh disappeared at Lincoln on 31 July 1255. His body was probably discovered on 29 August, in a well. A Jew named Copin or Koppin confessed to involvement. He confessed to John of Lexington, a servant of the crown, and relative of the Bishop of Lincoln. The church stood to gain from the establishment of a martyr's cult. Copin's confession was probably on return for the promise that his life should be spared. He is said to have confessed that the boy had been crucified by the Jews, who had assembled at Lincoln for that purpose. King Henry III, who had reached Lincoln at the beginning of October, had Copin executed and 91 of the Jews of Lincoln seized and sent up to London, where 18 of them were executed. The rest were pardoned at the intercession of the Franciscans or Dominicans. Within a few decades, Jews would be expelled from all of England in 1290 and not allowed to return until 1657.

Continental Europe

Simon of Trent blood libel. Illustration in Hartmann Schedel's Weltchronik, 1493
 
Much like the blood libel of England, the history of blood libel in continental Europe consists of unsubstantiated claims made about the (sometimes) discovered corpses of Christian children. There were frequently associated supernatural events speculated about these discoveries and corpses, events which were often attributed by contemporaries to miracles. Also, just as in England, these accusations in continental Europe typically resulted in the execution of numerous Jews — sometimes even all, or close to all, the Jews in one town. These accusations and their effects also, in some cases, led to royal interference on behalf of the Jews. 

Thomas of Monmouth's story of the annual Jewish meeting to decide which local community would kill a Christian child also quickly spread to the continent. An early version appears in Bonum Universale de Apibus ii. 29, § 23, by Thomas of Cantimpré (a monastery near Cambray). Thomas wrote, "It is quite certain that the Jews of every province annually decide by lot which congregation or city is to send Christian blood to the other congregations." Thomas of Cantimpré also believed that since the time when the Jews called out to Pontius Pilate, "His blood be on us, and on our children" (Matthew 27:25), they have been afflicted with hemorrhages, a condition equated with male menstruation:
A very learned Jew, who in our day has been converted to the (Christian) faith, informs us that one enjoying the reputation of a prophet among them, toward the close of his life, made the following prediction: 'Be assured that relief from this secret ailment, to which you are exposed, can only be obtained through Christian blood ("solo sanguine Christiano").' This suggestion was followed by the ever-blind and impious Jews, who instituted the custom of annually shedding Christian blood in every province, in order that they might recover from their malady.
Thomas added that the Jews had misunderstood the words of their prophet, who by his expression "solo sanguine Christiano" had meant not the blood of any Christian, but that of Jesus – the only true remedy for all physical and spiritual suffering. Thomas did not mention the name of the "very learned" proselyte, but it may have been Nicholas Donin of La Rochelle, who, in 1240, had a disputation on the Talmud with Yechiel of Paris, and who in 1242 caused the burning of numerous Talmudic manuscripts in Paris. It is known that Thomas was personally acquainted with this Nicholas. Nicholas Donin and another Jewish convert, Theobald of Cambridge, are greatly credited with the adoption and the belief of the blood libel myth in Europe.

The first known case outside England was in Blois, France, in 1171. This was the site of a blood libel accusation against the town's entire Jewish community that led to around 31–33 Jews (with 17 women making up this total) being burned to death. on 29 May of that year, or the 20th of Sivan of 4931. The blood libel revolved around R. Isaac, a Jew whom a Christian servant reported had deposited a murdered Christian in the Loire. The child's body was never found. The count had the about 40 adult Blois Jews arrested and they were eventually to be burned. The surviving members of the Blois Jewish community, as well as surviving holy texts, were ransomed. As a result of this case, the Jews garnered new promises from the king. The burned bodies of the sentenced Jews were supposedly maintained unblemished through the burning, a claim which is a well-known miracle, martyr myth for both Jews and Christians. There is significant primary source material from this case including a letter revealing moves for Jewish protection with King Louis VII. Responding to the mass execution, the 20th of Sivan was declared a fast day by Rabbenu Tam. In this case in Blois, there was not yet the myth proclaimed that Jews needed the blood of Christians.

Painting of Werner of Oberwesel as a martyr
 
At Pforzheim, Baden, in 1267, a woman supposedly sold said girl over to Jews who, according to the myth, then cut her open and dumped her in the Enz River. Boatmen found her, she apparently ordered vengeance, and then passed. The body apparently bled as the suspected Jews were brought to it. The woman and the reportedly involved Jews confessed and were then subsequently killed. That a judicial murder was then and there committed against the Jews in consequence of the accusation is evident from the manner in which the Nuremberg "Memorbuch" and the synagogal poems refer to the incident (Siegmund Salfeld, Das Martyrologium des Nürnberger Memorbuches (1898), pp. 15, 128–130). 

In 1270, at Weissenburg, of Alsace, a miracle alone decided the charge against the Jews. A child's body had shown up in the Lauter River. Supposedly, Jews cut into the child to acquire his blood and the child apparently continued bleeding for five days.

At Oberwesel, near Easter of 1287, "miracles" again constituted the only evidence against the Jews. The corpse of the 16-year-old Werner of Oberwesel (also referred to as "Good Werner") apparently landed at Bacharach and the body supposedly caused miracles, particularly medicinal miracles. Also, there was apparently light coming from the body. Reportedly, the child was hung upside down, forced to throw up the host and was cut open. In consequence, the Jews of Oberwesel and many other adjacent localities were severely persecuted during the years 1286-89. The Jews of Oberwesel were particularly targeted because there were no Jews remaining in Bacharach following a 1283 pogrom. Additionally, there were pogroms following this case as well at and around Oberwesel. Rudolph of Hapsburg, to whom the Jews had appealed for protection, in order to manage the "miracle" story, supposedly had the archbishop of Mainz declare great wrong had been done to the Jew. This apparent declaration was very limited in effectiveness.

A statement was made, in the "Chronicle" of Konrad Justinger of 1423, that at Bern in 1293 or 1294 the Jews tortured and murdered a boy called Rudolph (sometimes also referred to as Rudolph, Ruff, or Ruof). The body was reportedly found by the house of Jöly, a Jew. The Jewish community was then implicated. The penalties imposed upon the Jews included torture, execution, expulsion, and steep financial fines. Justinger argued Jews were out to harm Christianity. The historical impossibility of this widely credited story was demonstrated by Jakob Stammler, pastor of Bern, in 1888.

There have been several explanations put forth as to why these blood libel accusations were made and perpetuated. For example, it has been argued Thomas of Monmouth's account and other similar false accusations, as well as their perpetuation, largely had to do with the economic and political interests of leaders who did, in fact, perpetuate these myths. Additionally, it was largely believed in Europe that Jews used Christian blood for medicinal and other purposes. Despite the unsubstantiated, mythical nature of these claims, as well as their sources, they evidently materially impacted the communities in which they occurred including both the Jewish and non-Jewish populations.

Renaissance and Baroque

From an 18th-century etching from Brückenturm. Above: The murdered body of Simon of Trent. Below: The "Judensau"
 
Simon of Trent, aged two, disappeared, and his father alleged that he had been kidnapped and murdered by the local Jewish community. Fifteen local Jews were sentenced to death and burned. Simon was regarded locally as a saint, although he was never canonised by the church of Rome under Pope Sixtus V in 1588. His local status as a saint was removed in 1965 by Pope Paul VI

Christopher of Toledo, also known as Christopher of La Guardia or "the Holy Child of La Guardia", was a four-year-old Christian boy supposedly murdered by two Jews and three Conversos (converts to Christianity). In total, eight men were executed. It is now believed that this case was constructed by the Spanish Inquisition to facilitate the expulsion of Jews from Spain. He was canonized by Pope Pius VII in 1805. Christopher has since been removed from the canon. 

In a case at Tyrnau (Nagyszombat, today Trnava, Slovakia), the absurdity, even the impossibility, of the statements forced by torture from women and children shows that the accused preferred death as a means of escape from the torture, and admitted everything that was asked of them. They even said that Jewish men menstruated, and that the latter therefore practiced the drinking of Christian blood as a remedy. 

At Bösing (Bazin, today Pezinok, Slovakia), it was charged that a nine-year-old boy had been bled to death, suffering cruel torture; thirty Jews confessed to the crime and were publicly burned. The true facts of the case were disclosed later, when the child was found alive in Vienna. He had been taken there by the accuser, Count Wolf of Bazin, as a means of ridding himself of his Jewish creditors at Bazin. 

Fresco in St Paul's Church in Sandomierz, Poland, depicting blood libel
 
In Rinn, near Innsbruck, a boy named Andreas Oxner (also known as Anderl von Rinn) was said to have been bought by Jewish merchants and cruelly murdered by them in a forest near the city, his blood being carefully collected in vessels. The accusation of drawing off the blood (without murder) was not made until the beginning of the 17th century, when the cult was founded. The older inscription in the church of Rinn, dating from 1575, is distorted by fabulous embellishments – for example, that the money paid for the boy to his godfather turned into leaves, and that a lily blossomed upon his grave. The cult continued until officially prohibited in 1994, by the Bishop of Innsbruck.

On 17 January 1670 Raphael Levy, a member of the Jewish community of Metz, was executed on charges of the ritual murder of a peasant child who had gone missing in the woods outside the village of Glatigny on 25 September 1669, the eve of Rosh Hashanah.

19th century

One of the child-saints in the Russian Orthodox Church is the six-year-old boy Gavriil Belostoksky from the village Zverki. According to the legend supported by the church, the boy was kidnapped from his home during the holiday of Passover while his parents were away. Shutko, who was a Jew from Białystok, was accused of bringing the boy to Białystok, poking him with sharp objects and draining his blood for nine days, then bringing the body back to Zverki and dumping it at a local field. A cult developed, and the boy was canonized in 1820. His relics are still the object of pilgrimage. On All Saints Day, 27 July 1997, the Belarusian state TV showed a film alleging the story is true. The revival of the cult in Belarus was cited as a dangerous expression of antisemitism in international reports on human rights and religious freedoms which were passed to the UNHCR.
  • 1823–35 Velizh blood libel: After a Christian child was found murdered outside of this small Russian town in 1823, accusations by a drunk prostitute led to the imprisonment of many local Jews. Some were not released until 1835.
  • 1840 Damascus affair: In February, at Damascus, a Catholic monk named Father Thomas and his servant disappeared. The accusation of ritual murder was brought against members of the Jewish community of Damascus.
  • 1840 Rhodes blood libel: The Jews of Rhodes, under the Ottoman Empire, were accused of murdering a Greek Christian boy. The libel was supported by the local governor and the European consuls posted to Rhodes. Several Jews were arrested and tortured, and the entire Jewish quarter was blockaded for twelve days. An investigation carried out by the central Ottoman government found the Jews to be innocent.
  • In 1844 David Paul Drach, the son of the Head Rabbi of Paris and a convert to Christianity, wrote in his book De L’harmonie Entre L’eglise et la Synagogue, that a Catholic priest in Damascus had been ritually killed and the murder covered up by powerful Jews in Europe; referring to the 1840 Damascus affair [See above]
  • In March 1879, ten Jewish men from a mountain village were brought to Kutaisi, Georgia to stand trial for the alleged kidnapping and murder of a Christian girl. The case attracted a great deal of attention in Russia (of which Georgia was then a part): "While periodicals as diverse in tendency as Herald of Europe and Saint Petersburg Notices expressed their amazement that medieval prejudice should have found a place in the modern judiciary of a civilized state, New Times hinted darkly of strange Jewish sects with unknown practices." The trial ended in acquittal, and the orientalist Daniel Chwolson published a refutation of the blood libel.
  • 1882 Tiszaeszlár blood libel: The Jews of the village of Tiszaeszlár, Hungary were accused of the ritual murder of a fourteen-year-old Christian girl, Eszter Solymosi. The case was one of the main causes of the rise of antisemitism in the country. The accused persons were eventually acquitted.
  • In 1899 Hilsner Affair: Leopold Hilsner, a Czech Jewish vagabond, was accused of murdering a nineteen-year-old Christian woman, Anežka Hrůzová, with a slash to the throat. Despite the absurdity of the charge and the relatively progressive nature of society in Austria-Hungary, Hilsner was convicted and sentenced to death. He was later convicted of an additional unsolved murder, also involving a Christian woman. In 1901, the sentence was commuted to life imprisonment. Tomáš Masaryk, a prominent Austro-Czech philosophy professor and future president of Czechoslovakia, spearheaded Hilsner's defense. He was later blamed by Czech media because of this. In March 1918, Hilsner was pardoned by Austrian emperor Charles I. He was never exonerated, and the true guilty parties were never found.

20th century and beyond

  • The 1903 Kishinev pogrom, an anti-Jewish revolt, started when an anti-Semitic newspaper wrote that a Christian Russian boy, Mikhail Rybachenko, was found murdered in the town of Dubossary, alleging that the Jews killed him in order to use the blood in preparation of matzo. Around 49 Jews were killed and hundreds were wounded, with over 700 houses being looted and destroyed.
  • In the 1910 Shiraz blood libel, the Jews of Shiraz, Iran, were falsely accused of murdering a Muslim girl. The entire Jewish quarter was pillaged; the pogrom left 12 Jews dead and about 50 injured.
Antisemitic flier in Kiev, 1915: "Christians, take care of your children!!! It will be Jewish Passover on 17 March."
  • The Matzah Of Zion was written by the Syrian Defense Minister, Mustafa Tlass in 1986. The book concentrates on two issues: renewed ritual murder accusations against the Jews in the Damascus affair of 1840, and The Protocols of the Elders of Zion. The book was cited at a United Nations conference in 1991 by a Syrian delegate. On 21 October 2002, the London-based Arabic paper Al-Hayat reported that the book The Matzah of Zion was undergoing its eighth reprinting and was being translated into English, French and Italian. Egyptian filmmaker Munir Radhi has announced plans to adapt the book into a film.
  • In 2003, a private Syrian film company created a 29-part television series Ash-Shatat ("The Diaspora"). This series originally aired in Lebanon in late 2003 and it was subsequently broadcast by Al-Manar, a satellite television network owned by Hezbollah. This TV series, based on the antisemitic forgery The Protocols of the Learned Elders of Zion, shows the Jewish people engaging in a conspiracy to rule the world, and it also presents Jews as people who murder the children of Christians, drain their blood and use this blood to bake matzah.
  • In early January 2005, some 20 members of the Russian State Duma publicly made a blood libel accusation against the Jewish people. They approached the Prosecutor General's Office and demanded that Russia "ban all Jewish organizations." They accused all Jewish groups of being extremist, "anti-Christian and inhumane, and even accused them of practices that include ritual murders." Alluding to previous antisemitic Russian court decrees that accused the Jews of ritual murder, they wrote that "Many facts of such religious extremism were proven in courts." The accusation included traditional antisemitic canards, such as "the whole democratic world today is under the financial and political control of international Jewry. And we do not want our Russia to be among such unfree countries". This demand was published as an open letter to the prosecutor general, in Rus Pravoslavnaya (Русь православная, "Orthodox Russia"), a national-conservative newspaper. This group consisted of members of the ultra-nationalist Liberal Democrats, the Communist faction, and the nationalist Motherland party, with some 500 supporters. The mentioned document is known as "The Letter of Five Hundred" ("Письмо пятисот"). Their supporters included editors of nationalist newspapers as well as journalists. By the end of the month, this group was strongly criticized, and it retracted its demand in response.
Painting of blood libel in Sandomierz Cathedral
  • At the end of April 2005, five boys, ages 9 to 12, in Krasnoyarsk (Russia) disappeared. In May 2005, their burnt bodies were found in the city sewage. The crime was not disclosed, and in August 2007 the investigation was extended until 18 November 2007. Some Russian nationalist groups claimed that the children were murdered by a Jewish sect with a ritual purpose. Nationalist M. Nazarov, one of the authors of "The Letter of Five Hundred" alleges "the existence of a 'Hasidic sect', whose members kill children before Passover to collect their blood", using the Beilis case mentioned above as evidence. M.Nazarov also alleges that "the ritual murder requires throwing the body away rather than its concealing". "The Union of the Russian People" demanded officials thoroughly investigate the Jews, not stopping at the search in synagogues, Matzah bakeries and their offices.
  • During a speech in 2007, Raed Salah, the leader of the northern branch of the Islamic Movement in Israel, accused Jews of using children's blood to bake bread. "We have never allowed ourselves to knead [the dough for] the bread that breaks the fast in the holy month of Ramadan with children's blood", he said. "Whoever wants a more thorough explanation, let him ask what used to happen to some children in Europe, whose blood was mixed in with the dough of the [Jewish] holy bread."
  • In 2008, a Polish team of anthropologists and sociologists investigated the currency of the blood libel myth in Sandomierz where a painting depicting the blood libel adorns the Cathedral, and they discovered that these beliefs persist among Catholic and Orthodox Christians of all social classes.
  • In an address that aired on Al-Aqsa TV, a Hamas run TV station in Gaza, on 31 March 2010, Salah Eldeen Sultan (Arabic: صلاح الدين سلطان), founder of the American Center for Islamic Research in Columbus, Ohio, the Islamic American University in Southfield, Michigan, and the Sultan Publishing Co. and described in 2005 as "one of America's most noted Muslim scholars", alleged that Jews kidnap Christians and others in order to slaughter them and use their blood for making matzos. Sultan, who is currently a lecturer on Muslim jurisprudence at Cairo University stated that: "The Zionists kidnap several non-Muslims [sic] – Christians and others... this happened in a Jewish neighborhood in Damascus. They killed the French doctor, Toma, who used to treat the Jews and others for free, in order to spread Christianity. Even though he was their friend and they benefited from him the most, they took him on one of these holidays and slaughtered him, along with the nurse. Then they kneaded the matzos with the blood of Dr. Toma and his nurse. They do this every year. The world must know these facts about the Zionist entity and its terrible corrupt creed. The world should know this." (Translation by the Middle East Media Research Institute)
  • During an interview which aired on Rotana Khalijiya TV on 13 August 2012, Saudi Cleric Salman Al-Odeh stated (as translated by MEMRI) that "It is well known that the Jews celebrate several holidays, one of which is the Passover, or the Matzos Holiday. I read once about a doctor who was working in a laboratory. This doctor lived with a Jewish family. One day, they said to him: 'We want blood. Get us some human blood.' He was confused. He didn't know what this was all about. Of course, he couldn't betray his work ethics in such a way, but he began inquiring, and he found that they were making matzos with human blood." Al-Odeh also stated that "[Jews] eat it, believing that this brings them close to their false god, Yahweh" and that "They would lure a child in order to sacrifice him in the religious rite that they perform during that holiday."
  • In April 2013, the Palestinian non-profit organization MIFTAH, founded by Hanan Ashrawi apologized for publishing an article which criticized US President Barack Obama for holding a Passover Seder in the White House by saying "Does Obama in fact know the relationship, for example, between ‘Passover’ and ‘Christian blood’...?! Or ‘Passover’ and ‘Jewish blood rituals?!’ Much of the chatter and gossip about historical Jewish blood rituals in Europe is real and not fake as they claim; the Jews used the blood of Christians in the Jewish Passover." MIFTAH's apology expressed its "sincerest regret."
  • In an interview which aired on Al-Hafez TV on 12 May 2013, Khaled Al-Zaafrani of the Egyptian Justice and Progress Party, stated (as translated by MEMRI): "It's well known that during the Passover, they [the Jews] make matzos called the "Blood of Zion." They take a Christian child, slit his throat and slaughter him. Then they take his blood and make their [matzos]. This is a very important rite for the Jews, which they never forgo... They slice it and fight over who gets to eat Christian blood." In the same interview, Al-Zaafrani stated that "The French kings and the Russian czars discovered this in the Jewish quarters. All the massacring of Jews that occurred in those countries were because they discovered that the Jews had kidnapped and slaughtered children, in order to make the Passover matzos."
  • In an interview which aired on the Al-Quds TV channel on 28 July 2014 (as translated by MEMRI), Osama Hamdan, the top representative of Hamas in Lebanon, stated that "we all remember how the Jews used to slaughter Christians, in order to mix their blood in their holy matzos. This is not a figment of imagination or something taken from a film. It is a fact, acknowledged by their own books and by historical evidence." In a subsequent interview with CNN's Wolf Blitzer, Hamdan defended his comments, stating that he "has Jewish friends."
  • In a sermon broadcast on the official Jordanian TV channel on 22 August 2014, Sheik Bassam Ammoush, a former Minister of Administrative Development who was appointed to Jordan's House of Senate ("Majlis al-Aayan") in 2011, stated (as translated by MEMRI): "In [the Gaza Strip] we are dealing with the enemies of Allah, who believe that the matzos that they bake on their holidays must be kneaded with blood. When the Jews were in the diaspora, they would murder children in England, in Europe, and in America. They would slaughter them and use their blood to make their matzos... They believe that they are God's chosen people. They believe that the killing of any human being is a form of worship and a means to draw near their god."

Views of the Catholic Church

The attitude of the Roman Catholic Church towards these accusations and the cults venerating children supposedly killed by Jews has varied over time. The Papacy generally opposed them, although it had problems in enforcing its opposition. 

In 1911, the Dictionnaire apologétique de la foi catholique, an important French Catholic encyclopedia, published an analysis of the blood libel accusations. This may be taken as being broadly representative of educated Catholic opinion in continental Europe at that time. The article noted that the popes had generally refrained from endorsing the blood libel, and it concluded that the accusations were unproven in a general sense, but it left open the possibility that some Jews had committed ritual murders of Christians. Other contemporary Catholic sources (notably the Jesuit periodical La Civiltà Cattolica) promoted the blood libel as truth.

Today, the accusations are almost entirely discredited in Catholic circles, and the cults associated with them have fallen into disfavour. For example, Simon of Trent was deleted from the Calendar of Saints in 1965 and does not appear in the current (2000) edition of the Roman Martyrology.

Papal pronouncements

  • Pope Innocent IV took action against the blood libel: "5 July 1247 Mandate to the prelates of Germany and France to annul all measures adopted against the Jews on account of the ritual murder libel, and to prevent accusation of Arabs on similar charges" (The Apostolic See and the Jews, Documents: 492–1404; Simonsohn, Shlomo, pp. 188–189, 193–195, 208). In 1247, he wrote also that "Certain of the clergy, and princes, nobles and great lords of your cities and dioceses have falsely devised certain godless plans against the Jews, unjustly depriving them by force of their property, and appropriating it themselves;... they falsely charge them with dividing up among themselves on the Passover the heart of a murdered boy...In their malice, they ascribe every murder, wherever it chance to occur, to the Jews. And on the ground of these and other fabrications, they are filled with rage against them, rob them of their possessions without any formal accusation, without confession, and without legal trial and conviction, contrary to the privileges granted to them by the Apostolic See... Since it is our pleasure that they shall not be disturbed,... we ordain that ye behave towards them in a friendly and kind manner. Whenever any unjust attacks upon them come under your notice, redress their injuries, and do not suffer them to be visited in the future by similar tribulations" (Catholic Encyclopedia (1910), Vol. 8, pp. 393–394). 
  • Pope Gregory X (1271–1276) issued a letter which criticized the practice of blood libels and forbade arrests and persecution of Jews based on a blood libel, ... unless which we do not believe they be caught in the commission of the crime.
  • Pope Paul III, in a bull of 12 May 1540, made clear his displeasure at having learned, through the complaints of the Jews of Hungary, Bohemia and Poland, that their enemies, looking for a pretext to lay their hands on the Jews' property, were falsely attributing terrible crimes to them, in particular that of killing children and drinking their blood.
  • St. Pius V in the bull Hebraeorum gens sola (26 February 1569), by which he expelled Jews from all the cities of the Papal States except Rome and Ancona, made multiple accusations of wrong-doing against the Jews, including usury, theft, receiving stolen goods, pimping, divination and magic. He did not mention the blood libel.
  • Pope Benedict XIV wrote the bull Beatus Andreas (22 February 1755) in response to an application for the formal canonization of the 15th-century Andreas Oxner, a folk saint alleged to have been murdered by Jews "out of hatred for the Christian faith". Benedict did not dispute the factual claim that Jews murdered Christian children, and in anticipating that further cases on this basis would be brought appears to have accepted it as accurate, but decreed that in such cases beatification or canonization would be inappropriate.

Views of Muslims

In late 1553 or 1554, Suleiman the Magnificent, the reigning Sultan of the Ottoman Empire, issued a firman (royal decree) formally denouncing blood libels against the Jews. In 1840, following the Western outrage arising from the Damascus affair, British politician and leader of the British Jewish community, Sir Moses Montefiore, backed by other influential westerners including Britain's Lord Palmerston and Damascus consul Charles Henry Churchill, the French lawyer Adolphe Crémieux, Austrian consul Giovanni Gasparo Merlato, Danish missionary John Nicolayson, and Solomon Munk, persuaded Sultan Abdulmecid I in Constantinople, to issue a firman on 6 November 1840 intended to halt the spread of blood libel accusations in the Ottoman Empire. The edict declared that blood libel accusations is a slander against Jews and to be prohibited throughout the Ottoman Empire, and read in part:
... and for the love we bear to our subjects, we cannot permit the Jewish nation, whose innocence for the crime alleged against them is evident, to be worried and tormented as a consequence of accusations which have not the least foundation in truth...
However, despite the firman, pogroms spread through the Middle East and North Africa: Aleppo (1850, 1875), Damascus (1840, 1848, 1890), Beirut (1862, 1874), Dayr al-Qamar (1847), Jaffa (1876), Jerusalem (1847, 1870, 1895), Cairo (1844, 1890, 1901–02), Mansura (1877), Alexandria (1870, 1882, 1901–07), Port Said (1903, 1908), and Damanhur (1871, 1873, 1877, 1891). In the 1910 Shiraz blood libel, the Jews of Shiraz, Iran, were falsely accused of murdering a Muslim girl. The entire Jewish quarter was pillaged, with the pogrom leaving 12 Jews dead and about 50 injured.

Muslims have repeated the blood libel into the present. In 1983, Mustafa Tlass, the Syrian Minister of Defense, wrote and published The Matzah of Zion, which is a treatment of the Damascus affair of 1840 that repeats the ancient "blood libel", that Jews use the blood of murdered non-Jews in religious rituals such as baking Matza bread. In this book, he argues that the true religious beliefs of Jews are "black hatred against all humans and religions", and that no Arab country should ever sign a peace treaty with Israel. Tlass re-printed the book several times, and he stands by its conclusions. Following the book's publication, Tlass told Der Spiegel, that this accusation against Jews was valid and that his book is "an historical study ... based on documents from France, Vienna and the American University in Beirut."

In 2003, the Egyptian newspaper Al-Ahram published a series of articles by Osama El-Baz, a senior advisor to then Egyptian President Hosni Mubarak. Among other things, Osama El-Baz explained the origins of the blood libel against the Jews. He said that Arabs and Muslims have never been antisemitic, as a group, but accepted that a few Arab writers and media figures attack Jews "on the basis of the racist fallacies and myths that originated in Europe". He urged people not to succumb to "myths" such as the blood libel.

Nevertheless, blood libel stories have appeared in modern times on many occasions in the state-sponsored media of a number of Arab and Muslim nations, their television shows and websites, and books alleging instances of the Jewish blood libels are not uncommon there. The blood libel was featured in a scene in the Syrian TV series Ash-Shatat, shown in 2003, while in 2013 the Israeli website Arutz Sheva reported cases of Israeli Arabs asking "where Jews find the Christian blood they need to bake matza".

In 2007, Lebanese poet, Marwan Chamoun, in an interview aired on Télé Liban, referred to the "... slaughter of the priest Tomaso de Camangiano ... in 1840... in the presence of two rabbis in the heart of Damascus, in the home of a close friend of this priest, Daud Al-Harari, the head of the Jewish community of Damascus. After he was slaughtered, his blood was collected, and the two rabbis took it." A novel, Death of a Monk, based on the Damascus affair, was published in 2004.

Prejudice

From Wikipedia, the free encyclopedia

Prejudice is an affective feeling towards a person or group member based solely on that person's group membership (tribal behavior). The word is often used to refer to preconceived, usually unfavourable, feelings towards people or a person because of their political affiliation, sex, gender, beliefs, values, social class, age, disability, religion, sexuality, race/ethnicity, language, nationality, beauty, occupation, education, criminality, sport team affiliation or other personal characteristics. In this case, it refers to a positive or negative evaluation of another person based on that person's perceived group membership.

Prejudice can also refer to unfounded or pigeonholed beliefs and it may include "any unreasonable attitude that is unusually resistant to rational influence". Gordon Allport defined prejudice as a "feeling, favorable or unfavorable, toward a person or thing, prior to, or not based on, actual experience". Auestad (2015) defines prejudice as characterized by 'symbolic transfer', transfer of a value-laden meaning content onto a socially formed category and then on to individuals who are taken to belong to that category, resistance to change, and overgeneralization.

Prejudice can also be classified as a reaction to a race and/or culture based purely on experience.

Historical approaches

The first psychological research conducted on prejudice occurred in the 1920s. This research attempted to prove white supremacy. One article from 1925 which reviewed 73 studies on race concluded that the studies seemed "to indicate the mental superiority of the white race". These studies, along with other research, led many psychologists to view prejudice as a natural response to inferior races. 

In the 1930s and 1940s, this perspective began to change due to the increasing concern about anti-Semitism due to the ideology of the Nazis. At the time, theorists viewed prejudice as pathological and they thus looked for personality syndromes linked with racism. Theodor Adorno believed that prejudice stemmed from an authoritarian personality; he believed that people with authoritarian personalities were the most likely to be prejudiced against groups of lower status. He described authoritarians as "rigid thinkers who obeyed authority, saw the world as black and white, and enforced strict adherence to social rules and hierarchies".

In 1954, Gordon Allport, in his classic work The Nature of Prejudice, linked prejudice to categorical thinking. Allport claimed that prejudice is a natural and normal process for humans. According to him, "The human mind must think with the aid of categories… Once formed, categories are the basis for normal prejudgment. We cannot possibly avoid this process. Orderly living depends upon it."

In the 1970s, research began to show that prejudice tends to be based on favoritism towards one's own groups, rather than negative feelings towards another group. According to Marilyn Brewer, prejudice "may develop not because outgroups are hated, but because positive emotions such as admiration, sympathy, and trust are reserved for the ingroup."

In 1979, Thomas Pettigrew described the ultimate attribution error and its role in prejudice. The ultimate attribution error occurs when ingroup members "(1) attribute negative outgroup behavior to dispositional causes (more than they would for identical ingroup behavior), and (2) attribute positive outgroup behavior to one or more of the following causes: (a) a fluke or exceptional case, (b) luck or special advantage, (c) high motivation and effort, and (d) situational factors."

Youeng-Bruehl (1996) argued that prejudice cannot be treated in the singular; one should rather speak of different prejudices as characteristic of different character types. Her theory defines prejudices as being social defences, distinguishing between an obsessional character structure, primarily linked with anti-semitism, hysterical characters, primarily associated with racism, and narcissistic characters, linked with sexism.

Contemporary theories and empirical findings

The out-group homogeneity effect is the perception that members of an out-group are more similar (homogenous) than members of the in-group. Social psychologists Quattrone and Jones conducted a study demonstrating this with students from the rival schools Princeton University and Rutgers University. Students at each school were shown videos of other students from each school choosing a type of music to listen to for an auditory perception study. Then the participants were asked to guess what percentage of the videotaped students' classmates would choose the same. Participants predicted a much greater similarity between out-group members (the rival school) than between members of their in-group. 

The justification-suppression model of prejudice was created by Christian Crandall and Amy Eshleman. This model explains that people face a conflict between the desire to express prejudice and the desire to maintain a positive self-concept. This conflict causes people to search for justification for disliking an out-group, and to use that justification to avoid negative feelings (cognitive dissonance) about themselves when they act on their dislike of the out-group. 

The realistic conflict theory states that competition between limited resources leads to increased negative prejudices and discrimination. This can be seen even when the resource is insignificant. In the Robber's Cave experiment, negative prejudice and hostility was created between two summer camps after sports competitions for small prizes. The hostility was lessened after the two competing camps were forced to cooperate on tasks to achieve a common goal.

Another contemporary theory is the integrated threat theory (ITT), which was developed by Walter G Stephan. It draws from and builds upon several other psychological explanations of prejudice and ingroup/outgroup behaviour, such as the realistic conflict theory and symbolic racism. It also uses the social identity theory perspective as the basis for its validity; that is, it assumes that individuals operate in a group-based context where group memberships form a part of individual identity. ITT posits that outgroup prejudice and discrimination is caused when individuals perceive an outgroup to be threatening in some way. ITT defines four threats:
  • Realistic threats
  • Symbolic threats
  • Intergroup anxiety
  • Negative stereotypes
Realistic threats are tangible, such as competition for a natural resource or a threat to income. Symbolic threats arise from a perceived difference in cultural values between groups or a perceived imbalance of power (for example, an ingroup perceiving an outgroup's religion as incompatible with theirs). Intergroup anxiety is a feeling of uneasiness experienced in the presence of an outgroup or outgroup member, which constitutes a threat because interactions with other groups cause negative feelings (e.g., a threat to comfortable interactions). Negative stereotypes are similarly threats, in that individuals anticipate negative behaviour from outgroup members in line with the perceived stereotype (for example, that the outgroup is violent). Often these stereotypes are associated with emotions such as fear and anger. ITT differs from other threat theories by including intergroup anxiety and negative stereotypes as threat types. 

Additionally, social dominance theory states that society can be viewed as group-based hierarchies. In competition for scarce resources such as housing or employment, dominant groups create prejudiced "legitimizing myths" to provide moral and intellectual justification for their dominant position over other groups and validate their claim over the limited resources. Legitimizing myths, such as discriminatory hiring practices or biased merit norms, work to maintain these prejudiced hierarchies. 

Prejudice can be a central contributing factor to depression. This can occur in someone who is a prejudice victim, being the target of someone else's prejudice, or when people have prejudice against themselves that causes their own depression. 

Paul Bloom argues that while prejudice can be irrational and have terrible consequences, it is natural and often quite rational. This is because prejudices are based on the human tendency to categorise objects and people based on prior experience. This means people make predictions about things in a category based on prior experience with that category, with the resulting predictions usually being accurate (though not always). Bloom argues that this process of categorisation and prediction is necessary for survival and normal interaction, quoting William Hazlitt, who stated "Without the aid of prejudice and custom, I should not be able to find my way my across the room; nor know how to conduct myself in any circumstances, nor what to feel in any relation of life".

In recent years, researchers have argued that the study of prejudice has been traditionally too narrow. It is argued that since prejudice is defined as a negative affect towards members of a group, there are many groups against whom prejudice is acceptable (such as rapists, men who abandon their families, pedophiles, neo-Nazis, drink-drivers, queue jumpers, murderers etc.), yet such prejudices aren't studied. It has been suggested that researchers have focused too much on an evaluative approach to prejudice, rather than a descriptive approach, which looks at the actual psychological mechanisms behind prejudiced attitudes. It is argued that this limits research to targets of prejudice to groups deemed to be receiving unjust treatment, while groups researchers deem treated justly or deservedly of prejudice are overlooked. As a result, the scope of prejudice has begun to expand in research, allowing a more accurate analysis of the relationship between psychological traits and prejudice.

Controversies and prominent topics

One can be prejudiced against or have a preconceived notion about someone due to any characteristic they find to be unusual or undesirable. A few commonplace examples of prejudice are those based on someone's race, gender, nationality, social status, sexual orientation, or religious affiliation, and controversies may arise from any given topic.

Sexism

Sexism, also called gender discrimination, is prejudice or discrimination based on a person's sex or gender. Sexism can affect either gender, but it is particularly documented as affecting women and girls more often. The discussion of such sentiments, and actual gender differences and stereotypes continue to be controversial topics. Throughout history, women have been thought of as being subordinate to men, often being ignored in areas like the academia or belittled altogether. Traditionally, men were thought of as being more capable than women, mentally and physically. In the field of social psychology, prejudice studies like the "Who Likes Competent Women" study led the way for gender-based research on prejudice. This resulted in two broad themes or focuses in the field: the first being a focus on attitudes toward gender equality, and the second focusing on people's beliefs about men and women. Today, studies based on sexism continue in the field of psychology as researchers try to understand how people's thoughts, feelings, and behaviors influence and are influenced by others.

Nationalism

Nationalism is a sentiment based on common cultural characteristics that binds a population and often produces a policy of national independence or separatism. It suggests a "shared identity" amongst a nation's people that minimizes differences within the group and emphasizes perceived boundaries between the group and non-members. This leads to the assumption that members of the nation have more in common than they actually do, that they are "culturally unified", even if injustices within the nation based on differences like status and race exist. During times of conflict between one nation and another, nationalism is controversial since it may function as a buffer for criticism when it comes to the nation's own problems since it makes the nation's own hierarchies and internal conflicts appear to be natural. It may also serve a way of rallying the people of the nation in support of a particular political goal. Nationalism usually involves a push for conformity, obedience, and solidarity amongst the nation's people and can result not only in feelings of public responsibility but also in a narrow sense of community due to the exclusion of those who are considered outsiders. Since the identity of nationalists is linked to their allegiance to the state, the presence of strangers who do not share this allegiance may result in hostility.

Classism

Classism is defined by dictionary.com as "a biased or discriminatory attitude on distinctions made between social or economic classes." The idea of separating people based on class is controversial in itself. Some argue that economic inequality is an unavoidable aspect of society, so there will always be a ruling class. Some also argue that, even within the most egalitarian societies in history, some form of ranking based on social status takes place. Therefore, one may believe the existence of social classes is a natural feature of society.

Others argue the contrary. According to anthropological evidence, for the majority of the time the human species has been in existence, humans have lived in a manner in which the land and resources were not privately owned. Also, when social ranking did occur, it was not antagonistic or hostile like the current class system. This evidence has been used to support the idea that the existence of a social class system is unnecessary. Overall, society has neither come to a consensus over the necessity of the class system, nor been able to deal with the hostility and prejudice that occurs because of the class system.

Sexual discrimination

One's sexual orientation is the "direction of one's sexual interest toward members of the same, opposite, or both sexes". Like most minority groups, homosexuals and bisexuals are not immune to prejudice or stereotypes from the majority group. They may experience hatred from others because of their sexual preferences; a term for such intense hatred based upon one's sexual orientation is homophobia

Due to what social psychologists call the vividness effect, a tendency to notice only certain distinctive characteristics, the majority population tends to draw conclusions like gays flaunt their sexuality. Such images may be easily recalled to mind due to their vividness, making it harder to appraise the entire situation. The majority population may not only think that homosexuals flaunt their sexuality or are "too gay", but may also erroneously believe that homosexuals are easy to identify and label as being gay or lesbian when compared to others who are not homosexual.

The idea of heterosexual privilege seems to flourish in society. Research and questionnaires are formulated to fit the majority; i.e., heterosexuals. This discussion of whether heterosexuals are the privileged group and whether homosexuals are a minimized group is controversial. Research shows that discrimination on the basis of sexual orientation is a powerful feature of many labor markets. For example, controlling for human capital, studies show that gay men earn 10% - 32% less than heterosexual men in the United States, and that there is significant discrimination in hiring on the basis of sexual orientation in many labor markets.

Racism

Racism is defined as the belief that physical characteristics determine cultural traits, and that racial characteristics make some groups superior. By separating people into hierarchies based upon their race, it has been argued that unequal treatment among the different groups of people is just and fair due to their genetic differences. Racism can occur amongst any group that can be identified based upon physical features or even characteristics of their culture. Though people may be lumped together and called a specific race, everyone does not fit neatly into such categories, making it hard to define and describe a race accurately.

Scientific racism began to flourish in the eighteenth century and was greatly influenced by Charles Darwin's evolutionary studies, as well as ideas taken from the writings of philosophers like Aristotle; for example, Aristotle believed in the concept of "natural slaves". This concept focuses on the necessity of hierarchies and how some people are bound to be on the bottom of the pyramid. Though racism has been a prominent topic in history, there is still debate over whether race actually exists,[citation needed] making the discussion of race a controversial topic. Even though the concept of race is still being debated, the effects of racism are apparent. Racism and other forms of prejudice can affect a person's behavior, thoughts, and feelings, and social psychologists strive to study these effects.

Religious discrimination

While various religions teach their members to be tolerant of those who are different and to have compassion, throughout history there have been wars, pogroms and other forms of violence motivated by hatred of religious groups.

In the modern world, researchers in western, educated, industrialized, rich and democratic countries have done various studies exploring the relationship between religion and prejudice; thus far, they have received mixed results. A study done with US college students found that those who reported religion to be very influential in their lives seem to have a higher rate of prejudice than those who reported not being religious. Other studies found that religion has a positive effect on people as far as prejudice is concerned. This difference in results may be attributed to the differences in religious practices or religious interpretations amongst the individuals. Those who practice "institutionalized religion", which focuses more on social and political aspects of religious events, are more likely to have an increase in prejudice. Those who practice "interiorized religion", in which believers devote themselves to their beliefs, are most likely to have a decrease in prejudice.

Linguistic discrimination

Individuals or groups may be treated unfairly based solely on their use of language. This use of language may include the individual's native language or other characteristics of the person's speech, such as an accent, the size of vocabulary (whether the person uses complex and varied words), and syntax. It may also involve a person's ability or inability to use one language instead of another. 

In the mid-1980s, linguist Tove Skutnabb-Kangas captured this idea of discrimination based on language as the concept of linguicism. Kangas defined linguicism as the ideologies and structures used to "legitimate, effectuate, and reproduce unequal division of power and resources (both material and non-material) between groups which are defined on the basis of language."

Neurological discrimination

Broadly speaking, attribution of low social status to those who do not conform to neurotypical expectations of personality and behaviour. This can manifest through assumption of 'disability' status to those who are high functioning enough to exist outside of diagnostic criteria, yet do not desire to (or are unable to) conform their behaviour to conventional patterns. This is a controversial and somewhat contemporary concept; with various disciplinary approaches promoting conflicting messages what normality constitutes, the degree of acceptable individual difference within that category, and the precise criteria for what constitutes medical disorder. This has been most prominent in the case of high-functioning autism, where direct cognitive benefits increasingly appear to come at the expense of social intelligence.

Discrimination may also extend to other high functioning individuals carrying pathological phenotypes, such as those with attention deficit hyperactivity disorder and bipolar spectrum disorders. In these cases, there are indications that perceived (or actual) socially disadvantageous cognitive traits are directly correlated with advantageous cognitive traits in other domains, notably creativity and divergent thinking, and yet these strengths might become systematically overlooked. The case for "neurological discrimination" as such lies in the expectation that one's professional capacity may be judged by the quality of ones social interaction, which can in such cases be an inaccurate and discriminatory metric for employment suitability. 

Since there are moves by some experts to have these higher-functioning extremes reclassified as extensions of human personality, any legitimisation of discrimination against these groups would fit the very definition of prejudice, as medical validation for such discrimination becomes redundant. Recent advancements in behavioural genetics and neuroscience have made this a very relevant issue of discussion, with existing frameworks requiring significant overhaul to accommodate the strength of findings over the last decade.

Multiculturalism

Humans have an evolved propensity to think categorically about social groups, manifested in cognitive processes with broad implications for public and political endorsement of multicultural policy, according to psychologists Richard J. Crisp and Rose Meleady. They postulated a cognitive-evolutionary account of human adaptation to social diversity that explains general resistance to multiculturalism, and offer a reorienting call for scholars and policy-makers who seek intervention-based solutions to the problem of prejudice.

Reducing prejudice

The contact hypothesis

The contact hypothesis predicts that prejudice can only be reduced when in-group and out-group members are brought together. In particular, there are six conditions that must be met to reduce prejudice, as were cultivated in Elliot Aronson's "jigsaw" teaching technique. First, the in- and out-groups must have a degree of mutual interdependence. Second, both groups need to share a common goal. Third, the two groups must have equal status. Fourth, there must be frequent opportunities for informal and interpersonal contact between groups. Fifth, there should be multiple contacts between the in- and the out-groups. Finally, social norms of equality must exist and be present to foster prejudice reduction.

Empirical research

Academics Thomas Pettigrew and Linda Tropp conducted a meta-analysis of 515 studies involving a quarter of a million participants in 38 nations to examine how intergroup contact reduces prejudice. They found that three mediators are of particular importance: Intergroup contact reduces prejudice by (1) enhancing knowledge about the outgroup, (2) reducing anxiety about intergroup contact, and (3) increasing empathy and perspective-taking. While all three of these mediators had mediational effects, the mediational value of increased knowledge was less strong than anxiety reduction and empathy. In addition, some individuals confront discrimination when they see it happen, with research finding that individuals are more likely to confront when they perceive benefits to themselves, and are less likely to confront when concerned about others' reactions.

Genetically engineered 'Magneto' protein remotely controls brain and behaviour

“Badass” new method uses a magnetised protein to activate brain cells rapidly, reversibly, and non-invasively

The toroidal magnetic chamber (Tokamak) of the Joint European Torus (JET) at the Culham Science Centre. Photograph: AFP/Getty Images
The toroidal magnetic chamber (Tokamak) of the Joint European Torus (JET) at the Culham Science Centre. Photograph: AFP/Getty Images

Researchers in the United States have developed a new method for controlling the brain circuits associated with complex animal behaviours, using genetic engineering to create a magnetised protein that activates specific groups of nerve cells from a distance.

Understanding how the brain generates behaviour is one of the ultimate goals of neuroscience – and one of its most difficult questions. In recent years, researchers have developed a number of methods that enable them to remotely control specified groups of neurons and to probe the workings of neuronal circuits.

The most powerful of these is a method called optogenetics, which enables researchers to switch populations of related neurons on or off on a millisecond-by-millisecond timescale with pulses of laser light. Another recently developed method, called chemogenetics, uses engineered proteins that are activated by designer drugs and can be targeted to specific cell types.

Although powerful, both of these methods have drawbacks. Optogenetics is invasive, requiring insertion of optical fibres that deliver the light pulses into the brain and, furthermore, the extent to which the light penetrates the dense brain tissue is severely limited. Chemogenetic approaches overcome both of these limitations, but typically induce biochemical reactions that take several seconds to activate nerve cells.

The new technique, developed in Ali Güler’s lab at the University of Virginia in Charlottesville, and described in an advance online publication in the journal Nature Neuroscience, is not only non-invasive, but can also activate neurons rapidly and reversibly.

Several earlier studies have shown that nerve cell proteins which are activated by heat and mechanical pressure can be genetically engineered so that they become sensitive to radio waves and magnetic fields, by attaching them to an iron-storing protein called ferritin, or to inorganic paramagnetic particles. These methods represent an important advance – they have, for example, already been used to regulate blood glucose levels in mice – but involve multiple components which have to be introduced separately.

The new technique builds on this earlier work, and is based on a protein called TRPV4, which is sensitive to both temperature and stretching forces. These stimuli open its central pore, allowing electrical current to flow through the cell membrane; this evokes nervous impulses that travel into the spinal cord and then up to the brain.

Güler and his colleagues reasoned that magnetic torque (or rotating) forces might activate TRPV4 by tugging open its central pore, and so they used genetic engineering to fuse the protein to the paramagnetic region of ferritin, together with short DNA sequences that signal cells to transport proteins to the nerve cell membrane and insert them into it.

When they introduced this genetic construct into human embryonic kidney cells growing in Petri dishes, the cells synthesized the ‘Magneto’ protein and inserted it into their membrane. Application of a magnetic field activated the engineered TRPV1 protein, as evidenced by transient increases in calcium ion concentration within the cells, which were detected with a fluorescence microscope.

Next, the researchers inserted the Magneto DNA sequence into the genome of a virus, together with the gene encoding green fluorescent protein, and regulatory DNA sequences that cause the construct to be expressed only in specified types of neurons. They then injected the virus into the brains of mice, targeting the entorhinal cortex, and dissected the animals’ brains to identify the cells that emitted green fluorescence. Using microelectrodes, they then showed that applying a magnetic field to the brain slices activated Magneto so that the cells produce nervous impulses.

To determine whether Magneto can be used to manipulate neuronal activity in live animals, they injected Magneto into zebrafish larvae, targeting neurons in the trunk and tail that normally control an escape response. They then placed the zebrafish larvae into a specially-built magnetised aquarium, and found that exposure to a magnetic field induced coiling manouvres similar to those that occur during the escape response. (This experiment involved a total of nine zebrafish larvae, and subsequent analyses revealed that each larva contained about 5 neurons expressing Magneto.)

In one final experiment, the researchers injected Magneto into the striatum of freely behaving mice, a deep brain structure containing dopamine-producing neurons that are involved in reward and motivation, and then placed the animals into an apparatus split into magnetised a non-magnetised sections. Mice expressing Magneto spent far more time in the magnetised areas than mice that did not, because activation of the protein caused the striatal neurons expressing it to release dopamine, so that the mice found being in those areas rewarding. This shows that Magneto can remotely control the firing of neurons deep within the brain, and also control complex behaviours.
 
Neuroscientist Steve Ramirez of Harvard University, who uses optogenetics to manipulate memories in the brains of mice, says the study is “badass”.

“Previous attempts [using magnets to control neuronal activity] needed multiple components for the system to work – injecting magnetic particles, injecting a virus that expresses a heat-sensitive channel, [or] head-fixing the animal so that a coil could induce changes in magnetism,” he explains. “The problem with having a multi-component system is that there’s so much room for each individual piece to break down.”

“This system is a single, elegant virus that can be injected anywhere in the brain, which makes it technically easier and less likely for moving bells and whistles to break down,” he adds, “and their behavioral equipment was cleverly designed to contain magnets where appropriate so that the animals could be freely moving around.”

‘Magnetogenetics’ is therefore an important addition to neuroscientists’ tool box, which will undoubtedly be developed further, and provide researchers with new ways of studying brain development and function.

Reference

Wheeler, M. A., et al. (2016). Genetically targeted magnetic control of the nervous system. Nat. Neurosci., DOI: 10.1038/nn.4265 [Abstract]

Operator (computer programming)

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Operator_(computer_programmin...