I’ve noticed there’s been a bit of an uptick in think-pieces about what counts as “terrorism”. These tend to be built around a common observation that white mass murderers tend not to get the “terrorist” label and that the Trump administration reacts very differently to mass violence when the perpetrator is Muslim, an immigrant, a refugee, or a close relative thereof. Perhaps the most strident example is Matthew Walther’s piece in The Week in which he claims that there is “no such thing” as terrorism. It’s the return of a conversation we saw in 2015 and which has tended to repeat whenever some high profile mass violence occurs. This debate results from a lack of clarity in the way we think about violence. Let’s fix this.