OTTAWA—When a massacre on the scale of the terrorist attacks in Christchurch, New Zealand, hits the news, we all engage in examinations of what may have led to events as horrific as this to occur. And this time was no different. There was a lot of analysis of white supremacist material online, links among the far right in multiple nations, the role of the internet in spreading these vile beliefs and whether or not governments, and, more specifically, security intelligence and law enforcement agencies, have been doing enough to identify and clamp down on these kinds of terrorist and hate movements. That there remains a lot to do is beyond question.