Very interesting from the doctor’s perspective, I see. But the media’s slant to mental illness in crime might be wrong anyway, no one has actually reported that this man had a diagnosis of schizophrenia, bipolar, or whatever. Sounds more like a sociopath when you look at the tattoos and other things in his past.
Also, I have read that the “mentally ill” commit violent crimes at the same rate as the general population, about 2-3 percent. Even with psychosis, I believe most ill people tend to harm only themselves, not others. So I don’t believe the facts warrant the invasion of privacy, patient-doctor confidentiality, and personal liberties that would be imposed by trying through some very elaborate and expensive system to keep guns away from someone who you, as you say, you really cannot predict will do something.
most of these mass murders are linked to prescription meds.
the only one I don’t think that was (IIRC) the Amish school shootings.