Comments, in no particular order:
Ibram, even your low self-esteem is normal. We all love you, just not in that way.
It seems that HIPAA regulations, civil and privacy rights interfere in some cases. Maybe there should be situations that override these policies, that come before violence starts.
Aside from my well-known opinions on guns, this guy should never had been able to get a gun.
Mental health "mechanisms" cost money. Who wants to pony up? My guess is that themercenary doesn't want his taxes increased to pay for someone else's mental healthcare - until there's a shooting spree, of course.
UT is right. In fact, if people had tried to be his friend, they might well have been his first targets - he may have percieved them as being the cause of his distress.