I have to disagree about the school shootings started happening when they all but outlawed guns....it was when they all but outlawed whipping your kids butts!!! Just my opinion.
Naw...way before that, some guy with pointy ears wrote a book about how to deal with children with only positive reinforcement and that it was fine for the kids to do whatever they want. Dr. Spock or some such guy.
It was only after years of that brainwashing that they got to the point where it's wrong to give a child any sort of negative reinforcement.