At a recent feminist conference in London, the attendees were advised NOT to clap their hands. Clapping, it seems, could trigger anxiety in the speakers and the participants. So instead, the audience was urged to express approval with something called “feminist jazz hands.” So far, Jazz Hands have not caught on in the United States, but trigger warnings have become de rigueur on many college campuses. Well, what exactly are trigger warnings and are they something we should welcome? AEI Scholar Christina Hoff Sommers gives you the facts.