1. What do these atheists understand of religion?

Comment #67337 by Gewoonfred on September 3, 2007 at 4:44 am

....

me, i get so tired whenever i read these "look at the nazi's, stalin, pol pot etc." arguments.
Christians (e.g.) did horrible things because/in the name of their beliefs.
Atheists did horrible things for lots of other reasons (i can think of a few), but the only real reason is the fact that they were non-believers?

That really depresses me.