Even before Charlie Kirk had been pronounced dead, the narrative apparatus of the Left was in full gear trying to blame the assassination on the Right. Once it became clear that the shooter was a standard-issue leftist, the narrative shifted to “this is a both-sides problem.” But before Kirk had been laid the rest, the experts and researchers had been mobilized to assert that the original claims, if not accurate, were consistent with a pattern in which political violence in America is largely a right-wing problem. Having spent my career in academia sopping up such unctuous claims, let me assure...