Campus intellectual intolerance is back

In 1976, I was a student at Duke Law School. One of the campus speakers that year was Milton Friedman, who had recently received the Nobel Prize in economics. Prior to his talk, leftist student groups posted signs around the campus protesting Friedman’s appearance on the grounds that since he had once given some economic advice to Pinochet’s government in Chile, he was therefore complicit in that regime’s repression.