Banning guns won't work, but you have to address that part of the problem. I would go for much stricter regulations on ownership and make these parents and relatives spend quality time in prison when their guns are used for something like this. That's a start. Then we need to approach the mental health part of the problem. State hospitals are closing right and left. That's the opposite of what should be happening. It's ridiculous. Get these kids the help they need before this stuff happens. That will also help. Bullying. Abuse. Those have to be addressed, too. There isn't just one part of this problem you can attack full force and stop anything. You have to go at it from every angle possible.