A chart posted by Elliot Rodger, giving his chilling spin on a manosphere meme depicting supposed female “hypergamy”

When a white supremacist murders blacks or Jews, no one doubts that his murders are driven by his hateful, bigoted ideology. When homophobes attack a gay youth, we rightly label this a hate crime.

But when a man filled to overflowing with hatred of women acts upon this hatred and launches a killing spree targeting women, many people find it hard to accept that his violence has anything to do with his misogyny. They’re quick to blame it on practically anything else they can think of – guns, video games, mental illness – though none of these things in themselves would explain why a killer would target women.

In the case of Elliot Rodger, who set out on Friday night aiming, as he put it in a chilling video, to…