Without these innovations, the civil rights system was illogical and unstable. If you didn’t like affirmative action and political correctness, you didn’t like civil rights. For their part, politicians who claimed civil rights as a governing ideal grew uneasy when they saw a movement as truculent and implacable as Black Lives Matter speaking in its name. They called it “identity politics,” as if it were an aberration. It was not. It was a culmination.

