One of the more common threads across these shootings is that the shooters tend to have some sort of mental issues that are painfully obvious and seem to get reported well before the shooting occurs. But the shooter's illness often festers in solitude, just circling a mental drain and getting more deranged until some sort of trigger sets them off. IMO, there needs to be a system that encourages gun owners to keep tabs on each other and vouch for each other (else lose their own license), and also require enlistment in the National Guard (with some sort of reduced requirements made for physical disabilities), with regular mental health screenings to check for stuff like this. Owning a gun should be treated as a huge responsibility, not something that just gets handed out to any dipshits just because they're 'Merican.

Getting rid of guns altogether would be great, but that just won't fly in America, there's just no chance of that happening anytime soon.