Atheists do things because of varying reasons. hatred, racism, mental disorders, sadistic tendencies.. etc.
Religious people, on the other hand, do it in the name of an imaginary character.
I'm personally not foolish enough to generalize a whole sect based on the actions of a few.
My closest friends are devout Christians and Muslims, and we get along fine. I know what real religious people are like. They're not extremist retards that twist their religion's teachings to suit their needs, to a certain extent.