Anti-Religious Folk: Why hate God due to those who claim to do things in His name?

I notice a lot more animosity against people who believe in God (particularly against Christians). And God had always taught the right way to go and punished evil. Now, the main problem most people have is if God is so great, why is His people so rotten? Hasn't the question ever arisen in one's mind that possibly this is not a Christian? What does the bible say about this? To be a Christian means to follow after Christ and read His Word. His Word don't condone the bombings of abortion clinics or murders. It don't tell us to take the law in our own hands but to abide by the law. Now I understand people do crazy things saying God told them too... but perhaps it wasn't God who told them at all. Perhaps that's their ambition masquerading behind the mask of Christianity. Maybe it was Satan? Perhaps they are insane? I don't know, but there are other alternatives other than blaming Christ. I take the time to understand other beliefs in order to better understand them and they feel more at ease, knowing I am not trying to bash or berate them for their beliefs. Putting all of us in the same catergory is wrong.