Gun violence revisited

I'm astounded with all the proposed gun legislation dealing with the results of mental disturbance, not its cause. Since there will always be lots of guns and bullets to be found by the aberrant, it seem to me the obvious way, prevention, entails child mental health

Since parenthood has been a disastrous failure with these shooters, it seems apparent, to me anyway, that in-school detection and treatment is the only feasible approach. While the gun lobby would like to establish a presence in every school, a more realistic course is instead a pediatric behavioral expert, with training of teachers also. Can't derangement be prevented or at least ameliorated by catching and treating potential deviancy at grade-school level

That is, long before the kid reaches his teens and it's too late. However my premise has for some reason acquired virtually no attention, as contrasted with the arch-conservative universal call for gun control. Why

Thus is it a widespread assumption--even by the Liberal Faction--that dementia is inborn, that youngsters simply can't be reached by any known remedial technique

Why am I alone in this puzzlement, where has my thinking gone stray