How much you want to bet these guns were legal guns legally obtained by the kid’s family.
But to me the biggest issue, and nobody ever brings this up, is the fact that these events are covered wall-to-wall 24/7/365 for days and days, and it’s just a theory of mine, but I think that this triggers other disturbed and like-minded people, to do something similar, in other words it reduces their threshold for taking that next step.
I’m sure there are thousands of people that are thinking about doing these kinds of things but not all of them end up doing it. The continual coverage I think desensitizes some of these crazy people. It lowers their inhibitions.