> Lack of career prospects, lack of marriage prospects and lack of social attachment At least in many cases, these problems are caused by the men themselves (o

> Lack of career prospects, lack of marriage prospects and lack of social attachment At least in many cases, these problems are caused by the men themselves (or by their mental conditions, if you prefer). That "low status "disposable"" thing you mention isn't some arbitrary fluke of what society values; these people generally aren't victims of social standards. They tend to be ostracized by their peers who notice patterns of psychosis and violence years before any shooting occurs. The shooters aren't victims; the victims are the peers of these dangerous males who's concerns aren't taken seriously by adult authorities before it's too late. Since adults don't take the problem seriously until people start dying, all the other kids are left to deal with the problem themselves using the limited tools they have available; shunning, bullying, etc. Then when that fails, adults suddenly notice the problem and blame the kids who were ostracizing the shooter without bothering to ask why they were ostracizing the shooter. They misidentify a failed mitigation as the root cause.