I said in anther thread the root of these killings is hate and anger. We try to dismiss them as mental illnesses and while in certain cases mental illness played a role the root of them are still hate and anger.
Here is a recent news item regarding Lanza's motive
NEWTOWN, Conn. – The gunman who slaughtered 20 children and six adults at a Connecticut elementary school may have snapped because his mother was planning to commit him to a psychiatric facility, according to a lifelong resident of the area who was familiar with the killer’s family and several of the victims’ families.
Adam Lanza, 20, targeted Sandy Hook Elementary School in Newtown after killing his mother early Friday because he believed she loved the school “more than she loved him,” said Joshua Flashman, 25, who grew up not far from where the shooting took place. Flashman, a U.S. Marine, is the son of a pastor at an area church where many of the victims' families worship....
“From what I've been told, Adam was aware of her petitioning the court for conservatorship and (her) plans to have him committed," Flashman told FoxNews.com. "Adam was apparently very upset about this. He thought she just wanted to send him away. From what I understand, he was really, really angry. I think this could have been it, what set him off.”
Can you see how he might have acted out of anger and hate? Our world is getting more violent and there are more acts of violence being done and they are done out of hate and anger.