Lenin did NOT try to rid "Eastern Europe" of religion. He tried to impose a state religion known as Communism, which was (unfortunately 'is' in N Korea) a blend of state controlled economics with the culture of deification of the ruling class, in a word "totalitarianism". Folks like Orwell Koestler and Rand sussed it out pretty well in print.

The book "Eleni" takes some time to get down to specifics on what rural Greek life was under Communism, as well.

A nice Jewish lady tried to assassinate Lenin but only succeeded in shortening his life, which of course, led to Stalin.