I am a diversity, equity and inclusion (DEI) expert. Will Trump seize the apparent assassination attempt against him as an opportunity to meaningfully address the epidemic of gun violence in America? Will he deem unacceptable the dangers to which citizens are exposed as they go to schools, places of religious worship, concerts, movie theaters, supermarkets, shopping malls, sporting events, and now, presidential campaign rallies? It’s possible, but unlikely. Butler is less than an hour north of Pittsburgh. It isn’t an urban center. But many big cities in which large numbers of Black Americans reside have long been plagued with inexcusably...