The prototypical school shooters (the Columbine duo) filled their notebooks with misogynistic, white supremacist screeds. If you ever thought it strange the hysteria over video game violence and Satanism that emerged from that attack, it's because your instincts were correct. The media was reticent to cover what was really driving their violence because the conversation would have been uncomfortable for the sizable portion of Americans who agreed with their views on women and minorities but felt no need to shoot up a high school.

Unfortunately, the narrative that resulted colored later discourse with less-than-accurate assumptions about the nature of mass school shootings. They're overwhelmingly not carried out by bullied loners, but instead by entitled, ostracized bullies who aren't stopped because they don't fit the American conceptualization of who commits violence. To that point, even high-profile black and brown mass shooters tend not to be gangbangers or whatever, but men with military or law enforcement backgrounds.