The July 7th publication of A Letter on Justice and Open Debate in Harper’s Magazine sounded an alarm: “The free exchange of information and ideas, the lifeblood of a liberal society, is daily becoming more constricted.” Glancing at the list of signatories, many of us will find figures we respect—or at least figures to whom we listen. Their letter argues against “swift and severe retribution in response to perceived transgressions of speech and thought.” It