For more than a week now, the country has been mesmerized, and appalled, by the news emanating from academia. At Yale the insanity began over Halloween costumes. Erika Christakis, associate master of a residential college at Yale, courted outrage by announcing that “free speech and the ability to tolerate offense are the hallmarks of a free and open society” and it was not her business to police Halloween costumes.

To people unindoctrinated by the sensitivity training that is de rigueur on most campuses today, these sentiments...