Adam Lanza and Eric Harris, You Know?

Adam Lanza killed his mother, obviously, but the father's still alive. He hadn't seen his father inlyk two years at the time of the shooting. The question i think really has to be answered is that, why did this stuff not really happen before, like, the 19 eighties? There were plenty of guns. There was plenty of violence. Now there's like huge gaps where these things don't get into this sort of repedative killing until now.