Klebold, Harris, Holmes, Loughner, Roberts all have one thing in common White,male, mass killers.
The majority of mass killings in the U.S. are perpetrated by white males who blame everyone but themselves for their failures.
"Through history, there have been a lot of suggestions as to the cause of mass shootings. In the 60s, it was the permissive culture. In subsequent decades, it's been the teaching of evolution, working mothers, birth control pills, and "evangelical jockocracies." The interesting thing about all of these suggestions is that they may point indirectly at a much more plausible explanation. To begin with, we must ask who is offering these explanations in the first place. Overwhelmingly, the answer is white males. Most likely not coincidental is the fact that since 1982, one very specific type of mass shootings has been almost entirely perpetrated by white males."
"The thing is, losing power hurts. That's the "aggrieve" part of aggrieved entitlement. It's one thing for a bunch of white men to feel hurt because they are no longer the kings of their own private castles, rulers of all they survey. It's another thing for them to feel like they're entitled to power, and more importantly, entitled to punish others for taking it away."
http://www.examiner.com/article/conn...nd-mass-murder