Kids need more work, supervision
Many of them took weapons that didn't belong to them to carry out the killings. I guess people really should raise their kids better and be more responsible for their guns. I am retired now but when I was working, I spent nearly five years working in North Dakota. In that state nearly everybody was a hunter and fisherman and there were guns in every just about every house. I don't remember any gun violence in those years I was in North Dakota. Most of the kids there were too busy helping out to get in trouble. Their parents also showed them how to safely handle firearms in most cases.