The Communist Party of Czechoslovakia's leader's proposition led to the invasion of Czechoslovakia by the Soviet Union.
Under Nikita Khrushchev, the state leadership clashed with the churches in 19581964, a period when atheism was emphasized in the educational curriculum, and numerous state publications promoted atheistic views
In the late 1920s and early 1930s, Stalin ordered Marxist-Leninist parties across the world to strongly oppose non-Marxist political parties, labor unions or other organizations on the left

