On February 6, 2012, a teenager walking home with a pack of skittles through a quiet, middle-class Florida neighborhood was shot dead. The riots and outrage that followed brought the issue of race to the forefront and, from the Rose Garden, the President spoke to an embattled nation. “You know,” he said, “if I had a son, he’d look like Trayvon.” The shooting death of Trayvon Martin and the acquittal of the neighborhood watch shooter that followed in July of 2013 came under public scrutiny. Black America was up in arms over what they perceived as a national atrocity. Had...