Yale University makes no secret that among its top institutional priorities are “anti-racism” and diversity, equity, and inclusion . It is also no secret that both Yale’s administration and students have been vigilant — some say too vigilant — in condemning campus speech that challenges Yale’s DEI perspective. In 2015, mobs of students stalked, shouted, and cursed at a married team of professors for days, merely because the wife had questioned whether the campus DEI office needed to police students’ Halloween costumes. Both professors, Nicholas and Erika Christakis , were eventually driven to resign from their administrative leadership positions —...