Persecution of Christians in the Eastern Bloc

After the October Revolution, there was a movement within the Soviet Union to unite all of the people of the world under communist rule known as world communism. Communism as interpreted by Vladimir Lenin and his successors in the Soviet government included the abolition of religion and to this effect the Soviet government launched a long-running unofficial campaign to eliminate religion from society.

Source: Wikipedia — Persecution of Christians in the Eastern Bloc (CC BY-SA 4.0)