The terror threat Americans aren’t supposed to discuss

Crime scene following chase of vehicle driven by San Bernardino shooters Syed Farook and Tashfeen Malik. Americans have grown concerned about Islamic terrorism such as this.

Many commentators claim that Islam does not pose a threat of violence in the United States. Influencers such as Tucker Carlson often repeat this argument. Others, including then-President Joe Biden and FBI Director Christopher Wray, have argued that white supremacists represent the primary domestic threat.

Yet March...