Communist propaganda in the Soviet Union was extensively based on the Marxism-Leninism ideology to promote the Communist Party line. In societies with pervasive censorship, propaganda was omnipresent and vigorously enforced. It penetrated even social and natural sciences giving rise to various pseudo-scientific theories like Lysenkoism, whereas fields of real knowledge, as genetics, cybernetics, and comparative linguistics were condemned and forbidden as "bourgeois pseudoscience". With "truths repressed, falsehoods in every field were incessantly rubbed in print, at endless meetings, in school, in mass demonstrations, on the radio".
The main Soviet censorship body, Glavlit, was employed not only to eliminate any undesirable printed materials, but also "to ensure that the correct ideological spin was put on every published item". In the Stalin Era, deviation from the dictates of official propaganda was punished by execution and labor camps. In the post-Stalin era, these punitive measures were replaced by punitive psychiatry, prison, denial of work, and loss of citizenship. "Today a man only talks freely to his wife – at night, with the blankets pulled over his head", said writer Isaac Babel privately to a trusted friend.
According to historian Peter Kenez, "the Russian socialists have contributed nothing to the theoretical discussion of the techniques of mass persuasion. ... The Bolsheviks never looked for and did not find devilishly clever methods to influence people's minds, to brainwash them." This lack of interest, says Kenez, "followed from their notion of propaganda. They thought of propaganda as part of education." In a study published in 1958, business administration professor Raymond Bauer concluded, "Ironically, psychology and the other social sciences have been employed least in the Soviet Union for precisely those purposes for which Americans popularly think psychology would be used in a totalitarian state—political propaganda and the control of human behavior."