Then there was also a general failure of his wife and others who never reported his behavior to authorities. What percentage are they accountable for; why aren't they factored into the equation?
This is something often brought up, but its a slippery slope and while there are some situations where people may actually be at fault, there are others where they actually aren't but are FELT to be, and sometimes, that "feeling" gets them convicted. Particularly when when the "you knew, or should have known" argument is accepted by the jury.
The people who housed the OKC bomber before the bombing got 10year sentences from the GOVT because they didn't turn him in before he did anything. Their defense was that they simply never believed he was serious. The jury didn't buy it.
(I've heard) One of the mass murdering kids that killed at Columbine had a web page that was all sweetness nd light, brotherhood, and can't we all get along?....
the point here is that people talk trash all day long, and odd or weird behavior isn't a crime, until an actual crime is committed. Do we toss sports fans in jail for urging their team to "kill the other guys!"
No.
With the Virginia Tech shooting, the shooter was "evaluated" by mental health professionals (or at least one) and and they did not turn him in. Later reports said he was found to have problems but (at that time) they did not consider him a viable threat.
A while back, there was a guy in CA, who was "turned in" by his mom, and the cops did show up and talk to him. They found him sane and rational and not a threat. The NEXT DAY, that guy shot a few people, stabbed a few more and ran over a few with his car.
The point here is, that no matter how strange or how normal someone acts, NO ONE but they know what is in their heads, and I think blaming wife, family, friends, or even any shrink he talks to for not knowing (with certainty) what is inside the guys head is just ...wrong.
Suppose you own a gun (or a lot of guns) and something happens and you lose your job. That's life, and you pick up the pieces and move on, right?
OK, now suppose someone you used to work with calls the cops and tells them that you just lost your job and you have guns and so are a danger to the public....
Tough to pick up the pieces and move on when, thanks to a meddling idiot the cops have busted into your house, taken your property, possibly arrested you and now you're facing all kinds of crap and totally unwarranted expenses to defend yourself from the system, when you did nothing wrong and didn't plan to but someone THOUGHT you MIGHT....
(sure that's a worst case but it could happen)
Hindsight is always 20/20 and the only reasonable judgement on people's actions is in light of what they knew and believed at the time. Personally, I don't want trouble with the system because some wackjob thinks I'm a nut and he isn't, nor do I want people convicted of crimes they didn't commit because they didn't think and report someone who LATER turned out to do something evil.
One should NOT punish people for not being accurately clairvoyant. No matter how badly you want to find someone else to blame, no one but the guy who actually pulled the trigger is responsible. No one. Not the gun maker, or the store, or his 4th grade teacher or some yammerhead on UTube, no one but the shooter is actually the responsible party.
Looking for someone with deep pockets to blame, after the fact simply isn't honest, in my opinion.