In this toxic era of bitter cultural division, few things divide people as bitterly as Critical Race Theory (CRT), which isn’t a surprise, given that CRT divides. It divides people into groups pitted against one another, into categories of oppressed vs. oppressor. Your group defines you. It’s an ideology that stereotypes and separates based on race—ironically, in the name of opposing racism. In that regard, it smacks of so many bad ideas on the political Left, such as the “tolerance” movement and its rigid intolerance toward those who dare disagree, or the “diversity” movement and its lack of diversity toward...