This kid laid down the logic for how a someone young becomes a shooter. Read below.
The logic is sound. Kids that age are trying to figure out how to be a part of the world. Some kids have a lot of difficult for various reasons. Some just don’t have anyone to talk to.
Shooting up a school has become fashionable.
If you want to know how to make it “unfashionable” you should read this article. I guarantee you won’t like it, but it would work.