i saw in many documentaries, communist government banned religion and and tortured followers
russian communist closed the church or chinese government banned buddhist monastery
Religion was more or less banned in Russia until Stalin died. Even after his death they were hardly allowed. However, the Communist Party came in to terms with the public opinion in the 1980s and allowed a religious revival to occur in Russia. The same time, Communist Party of China also began allowing organized religion. But the Chinese communists are still firmly against sects, such as Falun Gong.