Athiests, Why so much anger and hate toward Christians?

I have been reading some questions from athiests on Y!Answers. I am taken aback by the hatred and rage toward Christians and God. Why lump all Christians together? Surely in all your wisdom you could fathom the idea that Christians aren't all judgemental, condescending hypocrites?! I consider it the same behavior as racism. You lump all Blacks, Muslims, etc into one category because of a ignorant few. Can any of you non-believers give me some idea of why you hate me because I believe in the God?