Photonic
Ad astra!
He's given you the fucking sources, moron. Go read them.
Well, nothing factually wrong with that (except Hitler was in no way an atheist). But we also know that atheism or religion wasn't the cause of those events. There is no atheist dogma, it's simply the state of lacking a believe in a deity. I would also like to point out that Buddhists, Confucianism, Taoism are religions that are atheistic by definition.
The atheistic state was so the government and dear leader was the object of worship. These places were just as religious, possibly more so than any of the mainstream religions.
These places almost weren't atheist, they replaced one God for Dear Leader.
Richard Dawkins looked into both Stalin and Hitler and he concluded that Stalin was definately an atheist while he thought Hitler a theist "of some sort", but was never able to pinpoint a belief system. His problem was the contradictory quotes that Hitler made, many of which supported Christianity but many which advocated the destruction of all religions.
My personal belief is Hitler was a atheist based on the pogroms he had planned for the Christians once the war was over. He had allready implemented the Jewish destruction as he felt he could get away with it.
I don't doubt it, they would have seen religion as a threat to their absolute power.