There's perhaps no type of person I'm more contemptuous of than those whose first response to a major social tragedy -- a terrorist attack, a mass shooting, a violent attack on a politician or political activist, and so on -- is gleeful musing on who they're now allowed to hate (or, typically, hate more than usual).
These are the people who get excited about what a suicide bombing "tells us about the Palestinians". They're amped about what a case of "price tag" settle violence "reveals about Zionists." They're positively giddy about what the shooting of Steve Scalise "illustrates about progressives". They can't wait to regale us about what the Manchester bombing "proves about Muslims."
Sometimes there are important social messages that are excavated by a major tragedy. They have real consequences after all, and they can be genuinely illustrative about certain threats various groups face or certain ideologies which have purchase.
My objection isn't to genuine and careful attempts to work through those meanings. Again -- it's to the giddiness that often accompanies it. They're more excited that their prejudices have been (in their minds) verified than they are that something terrible has happened. Their response is virtually never a "genuine and careful attempt" to craft a warranted conclusion from the full body of evidence. It is rather an expression of ideological ecstasy that dances upon graves even as it cloaks itself in the barest veil of solidarity.
It's a sick instinct. It's also an alarmingly commonplace one. I wish people would knock it off.