School shootings are a symptom of a very large, very dangerous problem. They are not simply a symptom of a need for gun control, or a symptom of a lack of accessible mental health services, or a symptom of an over-medicated, desensitized youth population.
There is now an average of one mass shooting each day in the USA. By any measure, this is a national crisis.
In Las Vegas on 1 October 2017, it appears that one man (although it might have been more) killed 58 people and shot and injured another 241 (with almost 300 more injured while fleeing). The incident got a lot of publicity, partly because the man managed to kill more people than most mass killers. However, because the killer was a