I don't guess I personally know any "atheists" meaning the people who just ouright say there is no God. Unfortunately, I do have friends who haven't accepted Jesus as their lord and Savior, but I know of no one who outright says there is no God.
I just don't understand why the atheists continuously "fight" against Christians/Christian holidays when they deny a God even exists. If they truly believe there is no God, then hy "waste so much of their time?" I mean if I say I don't "believe in purple elephants, then why would why go out protesting/saying there are no purple elephants--just doesn't make sense. But, like someone else said, I do think that, deep down, they know they are wrong.