In July, New York Times columnist Bret Stephens offered a notable mea culpa, acknowledging his failure to read or empathize with the mood of about half of the country. “I belonged to a social class that my friend Peggy Noonan called ‘the protected.’ My family lived in a safe and pleasant neighborhood. Our kids went to an excellent public school. I was well paid, fully insured, insulated against life’s harsh edges,” he wrote.