From Wikipedia, the free encyclopedia

Censorship is the suppression of speech, public communication, or other information, on the basis that such material is considered objectionable, harmful, sensitive, or "inconvenient". Censorship can be conducted by a government private institutions, and corporations.
 
Governments and private organizations may engage in censorship. Other groups or institutions may propose and petition for censorship. Using the term to describe actions by private institutions and corporations is controversial, as the word implies government intervention. When an individual such as an author or other creator engages in censorship of their own works or speech, it is referred to as self-censorship. It occurs in a variety of different media, including speech, books, music, films, and other arts, the press, radio, television, and the Internet for a variety of claimed reasons including national security, to control obscenity, child pornography, and hate speech, to protect children or other vulnerable groups, to promote or restrict political or religious views, and to prevent slander and libel.

Nikolai Yezhov, the man strolling to Joseph Stalin's left, was executed in 1940. Because of Censorship in the Soviet Union the soviet censors edited him out of the photo. Such retouching occurred commonly during Stalin's rule.