Rage is common among young adults. In American black humor, it's
  stereotypically white-guy, and they're kinda right.

  There's a lack of support structures for young isolated adults
  in the real world. There's plenty of support online, but since
  there is such a variety of anger groups that meet online where
  hating some organization or another is commonplace, I can see
  how it's easy to get wrapped up in it.

  Combine built up rage, social expectations to "Be A Man" without
  anybody showing you HOW to be a man and groups encouraging
  stories of conspiracy against them... it doesn't surprise me
  that some will have what they feel are rational excuses to snap.

  Solutions are community based but what's there to do?

  Churches USED to serve that function but they are hardly
  effective in cases of someone who feels disenfranchised by
  organized religion.

  So what's left? Bars?

  Psychological/psychiatric support requires $$$ and
  self-medication (alcohol, pot, other drugs) has only limited
  effects in people with existing undiagnosed mental problems
  exacerbated by online support groups who gladly fuel their
  mental illness to blossom into maturity.

  So, I don't know. I feel pity for them. Yet, more sorrow for the
  victims who won't get much in the way of posthumous fame or
  infamy as we all focus on the gunman.

  I'm doing it too. But there have to be ways to prevent at least
  _some_ future mass killers from ever even considering it a valid
  option. Mind you, I'm not arguing for religion or against
  religion. Rather, there's no equivalent social structure
  available yet for a young angry person that can contain him,
  keep him busy, keep him stable and going off the deep end.

  There needs to be other social systems out there to help people
  like this.*