What possessed Robin Westman?

He went to a church to kill children. Why did he want to do that? Gee, I don’t know! Maybe it's what he watched on TV. Or the way he was treated at school. Perhaps it was a chemical imbalance or some chemical dependence. He could have been abused at a very young age. Was he born evil, finally gaining the nerve to act out his deepest desire? Does it matter why?

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What possessed Robin Westman?
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