Critical race theory is the public issue du jour. Many talking heads on the usual cable news outlets have spent more time vilifying it than learning anything about it. And it’s not only talk. Bills intended to prevent the teaching of CRT have passed all over the country, from New Hampshire to Idaho and from Texas to Tennessee. The former president called discussions of race in schools “left-wing indoctrination” and promoted “patriotic education” as an alternative, as if discussing the history and theory of racial difference is unpatriotic.