Dissolution of the Soviet Union
Glasnost and "Memorial"

The lifting of total censorship and communist propaganda led to disclosure to public of such political and historical issues as the Molotov–Ribbentrop Pact, the Katyn massacre, revision of the Stalinist repressions, revision of the Russian Civil War, the White movement, the New Economic Policy, the 1986 Chernobyl disaster, censorship, pacification and procrastination by the Soviet authorities.

In 1989, the Soviet Union established a civil rights society, Memorial, which specialized in research and recovery of memory for victims of political repressions as well as support for a general human rights movement.
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