[snip] Only a minority of black and Hispanic call themselves liberal. Moreover, the liberal surge is driven primarily by college-educated white progressives — the exact people who occupy the commanding heights of American media, the academy, and pop culture. This white-liberal surge dovetails with other data, including the comprehensive “Hidden Tribes” study identifying left-wing polarization as being primarily driven by a “progressive activist” class that is disproportionately white, disproportionately college-educated, and disproportionately secular. The secularization of white Democrats is obvious from other sources as well. Pew Research Center data indicates that only 32 percent of white Democrats believe in the...