College Students Across the Political Spectrum Support Shouting Down Opponents

Once a left-wing fetish, the heckler’s veto has gained conservative adherents. It's a given that if one party to a disagreement keeps breaking the rules in order to harm opponents, the other participants will eventually sink to the challenge and adopt—or escalate—out-of-bounds tactics themselves. That's bad enough in any conflict, but it can be disastrous for a free and open society if the rules being broken by all parties are fundamental free speech norms. For years, we've seen left-leaning students and faculty on college campuses shout down and sometimes assault speakers with whom they disagree. Now right-leaning students have joined...