Dude, this is no joke.
The human mind can just control our actions, but the motions, they are hard to beat.
When I was living in Natal, Brazil, they had a case with a killing spree by a little girl! This girl was like.....9 years old I think? She was put into investigation for at least 2 years, for people trying to cure her, because she started the kill when at a reunion, where at least 100 people attended, 16 of them didn't leave breathing.
She killed her parents, as well as attempted so many suicide attempts, I can't remember how many, but she did it frequently. She basically was living in an asylum, just more of an institution of Human Behavior and Criminal Justice or whatever, I don't remember where she originally came from, and such, I didn't look into the case.
The main point is, this case, was so bad, that girl was deadly. She basically got a huge gang, and started a fight all over. But she was put down.
Like by force. She couldn't be cured.
So....Anyone and I mean ANYONE can be as bad then the people who caused the shooting, and have the potential, no doubt in my mind.
It sickens me sometimes, not only for the victims families, but for the causer, they shouldn't act that way.