WHAT MIGHT WE LEARN from a book on how people in the twentieth-century American South defined the problems of family life? Just a few moments from the summer of 2016 suggest some possibilities. Mississippi House Bill 1523, called the Religious Liberty Accommodations Act, claimed to protect people who believed that marriage should only unite one man and one woman from any laws or codes that might force them to marry or serve same-sex couples. When a U.S. district judge ruled that the law was unconstitutional, he compared it to Jim Crow laws that claimed to protect white people from laws that might force them into unwanted contact with African Americans. In the same summer, one of the first testimonials about Alton Sterling, the victim of a police killing in Baton Rouge, came from a friend who called him “just a brother” who was working to support his family. One of many responses to police violence that summer came from former New York mayor Rudy Giuliani, who claimed that there would be less violence, crime, and unrest if more black fathers would teach their children how to behave. The Democratic National Convention welcomed a group of women, called Mothers of the Movement, whose children had been killed by police officers. An internet story that turned out to be a hoax claimed that Hillary Clinton’s book ...