Adolph Hitler practiced mysticism and occultism and, therefore, was not an Atheist by definition, not to mention he was severely superstitious. Interestingly enough, he was also a strict vegetarian who disapproved of cosmetics since they contained animal by-products. Though that's not a defence in his name, merely an indication of his non-Atheism. Hitler's speeches were also known to contain a strong theological framework.

All branches of Christianity today have stemmed from either the Western or Eastern Roman Empire. The Western half, from which you hail, places a stricter observance over scriptures. The exact translations of the wording have been hotly debated. You'll find "Christians" in some southern states of the U.S. who expose themselves to poisonous snakes via pagan-like rituals all because "the Bible says so"; some Christians from the scripture-obsessed Western half wage fierce campaigns against the gay community because "the Bible says so"; the only meat some Christians consume is fish because "the Bible says so" while others eat all kinds of meat because "the Bible says so"; there are Christians who mutilate their own bodies by whipping themselves because "the Bible says so".

Atheists have been the target of Christians, not the other way around. For many years in the U.S. Atheists were not allowed to testify in court because it was believed that an Atheist would have no reason to tell the truth, without the fear of god motivating them to be honest. It's important to realise that no religious basis is necessary to live an ethical life. Abiding by a list of prohibitions (i.e., the "Ten Commandments") is not sufficient for genuinely ethical behaviour; morality should be positive, not negative (as in "What should I do?" rather than "What shouldn't I do?") Indeed it is religion, more often than not, that has been a source of immorality. As Francis Bacon once wrote: