I think there's more to it than that. I don't see anything I disagree with in your statements, but there is more too. There's something else. When I was growing up, when people had that much of a beef with each other, they used their fists and sorted it out. There was NEVER any thought that somebody would bring a gun.
One of the things that has been mentioned a lot, especially with kids, is that with the social media and texting that the bullying can be unrelenting. When we were kids, you went home and if you didn't want to be bothered you didn't go out.
There have always been altercations and bullying and everything else. The reactions are different now. I don't know why, but whatever factors contribute to that is where actions may be able to be put into place. I've said multiple times that I think the solution, if there is one, will have nothing to do with guns.