To insist on the shibboleth of “radical Islam,” at this moment in the political history of America, can no longer be a matter of insisting on rhetorical accuracy. To insist on this shibboleth, now, is to provide, intentionally or unintentionally, cover for those who are emboldened in their religious and racial bigotry by Mr. Trump’s rhetoric.

The cultural left treats the Orlando assault as if religious belief plays no role in the modern world, as if there is no difference between a school shooting by a young man who emotionally snaps and a suicide bombing planned and inspired by ISIS.