The crimes of atheism have generally been perpetrated through a hubristic ideology that sees man, not God, as the creator of values. Using the latest techniques of science and technology, man seeks to displace God and create a secular utopia here on earth.It's true that if God doesn't exist then we have to think about ethics for ourselves and people will choose different visions, but what does atheism itself have to do with the particular moral system chosen? Atheism doesn't cause anything and atheists certainly are not trying to displace God. The argument quoted only makes sense to me if you already believe in God, which atheists don't.
Atheism signifies which belief does not exist in the atheist mind. Whatever you say about "true religion" there are bits of paper saying various things, is it really controversial to suggest that the "true" meaning is not immediately obvious to everybody?
Are there other reasons why atheism is the driving force behind evil acts?