In the 1920s the government of the Soviet Union embarked on a campaign to fundamentally alter the behavior and ideals of Soviet citizens, to replace the old social frameworks of the Russian Empire with a new Soviet culture, to create the New Soviet man. The Soviets used newspapers, books, film, mass relocations, and even architectural-design tactics to serve as a "social condenser" and to change personal values and private relationships. In a manner of violence, political executions (for example the Night of the Murdered Poets in Moscow in 1952), and the fear of becoming a victim of mass murder, played an influential role in the social engineering frameworks in Soviet Russia. Similar examples include the Chinese "Great Leap Forward" (1958–1961) and "Cultural Revolution" (1966–1976) programs and the Khmer Rouge's deurbanization of Cambodia (1975–1979).