Probably no point even trying to understand such an irrational act.<quoted text>I've seen some terrifying behavior from a kid who was mentally abused by his father. The kid eventually became violent and broke out every window in their house in a seriously scary rampage. The boy acted better when medicated but when he came off got worse. I felt sorry for the dad until I caught him tormenting the kid one day. It was ugly. The boy started slapping himself and tearing at his face and hair like a dog that had a snout full of porcupine quills. Things got worse after that.
For all we know "evil" could have started with "mom". We may never know how bad thoughts started in the Lanza kid, and most of us will never understand why he felt compelled to kill more than just his mom and himself. I don't understand it.
The shooter is dead, so everything is just guesswork and pet theories to suit political viewpoints.