Portside

As Richard Rothstein contends in “The Color of Law,” a powerful and disturbing history of residential segregation in America, the government at all levels and in all branches abetted this injustice. “We have created a caste system in this country, with African-Americans kept exploited and geographically separate by racially explicit government policies,” he writes. “Although most of these policies are now off the books, they have never been remedied . . .