Actually, I just realized something and wonder why nobody else has made the connection.
Who else goes around collecting grievances, no matter how minor, committed against them by society?
Who else acts as if they are the center of the universe, and anybody else around them who might have a different brain or opinion are mere actors in their personal play?
Who else is merely attention whoring to their own beliefs and unwilling to accept that anyone else might perceive things otherwise?
Who else believes any slights they feel against them must all be intentional?
Mass murderers. School shooters.
These are really two sides of the same coin. One -- disenfranchised white males -- tries to shut down dissent through murder, weapons, and mayhem. The rest are what we read about here. They're really all the same. Only the tactics are different.