I know a number of 4th gen Mexican Americans close by who have the same “issue” but I’m almost sure they wont try to harm anyone. This is all on thew EF BEE AYE’s hands, all blood and all. They simply dropped the ball and it cost American lives (and illegals too)
And, just maybe, dispassionate, public, examination of all that evidence will lead society to recognize patterns that let us prevent future mass murders. Seems to me an awful lot of these were alleged to have warning signs in advance. There used to be a common sense category of 'dangerous lunatics' to which you could be assigned and for which you could be institutionalized, before proving your membership by inflicting mass casualties. And that we'd been able to do that without shipping all political dissenters to Soviet style 'psych' hospitals. Study the heck out of the worst cases. Let different jurisdictions legislate different remedies. Compare their results and adjust accordingly.