Before we get too "atheism bad" here let's remember that there are more people in psychiatric treatments due to religion than due to atheism.

Let us remember that while the Nazis were douchebags, they weren't raping children and covering it up. Neither was Mao or Stalin. And even if they were, how long could it have lasted? With organized religion, it went on for centuries unchecked.

When atheists get overzealous they just become a pain in the ass a la our own professor shaw, rarely is anyone ever hurt. When religious people get overzealous, not only are they a pain in the ass but rarely is anyone not hurt.