First off, most Christians don't hate. Christianity doesn't preach hate. We may hate what people do, but we don't hate.
I give this documentary a few more stars because it was more of a crime documentary than a Christianity vs atheism one. Madalyn Murray O'hair was an evil person to be sure. It's been documented how evil she was. How she swindled people, stole from people, knowingly hired unrepentant murderers and child molesters to work for her organization. Despite how much O'hair tried to make Christianity out to be evil, it was one of her own who killed her and her family.
O'hair also tried to move to the Soviet Union because of their inhumane state atheism, where practicing Religion was a crime and could get you anything from prison time to even the death penalty (depending on the dictator), but in the end even they didn't want her. I don't doubt for a minute that if O'hair had been given full power over the United States she would have made it like the Soviet Union (probably more like Stalin's version than any of the other leaders). I just hope she had a change of heart before she went to her judgment.