MIDDLEBURY, Vt. — There’s nothing like a little violence to focus the mind. I am the Middlebury College professor who ended up with whiplash and a concussion for having the audacity to engage with the ideas of Charles Murray, a scholar at the American Enterprise Institute.

Though he is someone with whom I disagree, I welcomed the opportunity to moderate a talk with him on campus on March 2 because several of my students asked me to do so. They know I am a Democrat, but the college courses I teach are nonpartisan. As I wrote on Facebook immediately after the incident, this was a chance to demonstrate publicly a commitment to a free and fair exchange of views in my classroom. But Dr. Murray was drowned out by students who never let him speak, and he and I were attacked and intimidated while trying to leave campus.

In the days after the violence, some have spun this story as one about what’s wrong with elite colleges and universities, our coddled youth or intolerant liberalism. Those analyses are incomplete.

Political life and discourse in the United States is at a boiling point, and nowhere is the reaction to that more heightened than on college campuses. Throughout an ugly campaign and into his presidency, President Trump has demonized Muslims as terrorists and dehumanized many groups of marginalized people. He declared the free press an enemy of the people, replaced deliberation with tweeting, and seems bent on dismantling the separation of powers and 230 years of progress this country has made toward a more perfect union. Much of the free speech he has inspired — or has refused to disavow — is ugly, and has already had ugly real-world consequences. College students have seen this, and have taken note: Speech can become action.