More than two dozen scholars, pundits, and other invited guests help Commentary magazine explore present-day threats to free speech. Among the more interesting observations are those of New York University law school professor Richard Epstein.

Today, the greatest threat to the constitutional protection of freedom of speech comes from campus rabble-rousers who invoke this very protection. In their book, the speech of people like Charles Murray and Heather Mac Donald constitutes a form of violence, bordering on genocide, that receives no First Amendment protection. …

… By such tortured logic, a new generation of vigilantes distorts the First Amendment doctrine: Speech becomes violence, and violence becomes heroic acts of self-defense. The standard First Amendment interpretation emphatically rejects that view. Of course, the First Amendment doesn’t let you say what you want when and wherever you want to. Your freedom of speech is subject to the same limitations as your freedom of action. So you have no constitutional license to assault other people, to lie to them, or to form cartels to bilk them in the marketplace. But folks such as Murray, Mac Donald, and even Yiannopoulos do not come close to crossing into that forbidden territory. …

… This distinction is central to the First Amendment. Fighting words have to be blocked by well-tailored criminal and civil sanctions lest some people gain license to intimidate others from speaking or peaceably assembling. The remedy for mere offense is to speak one’s mind in response. But it never gives anyone the right to block the speech of others, lest everyone be able to unilaterally increase his sphere of action by getting really angry about the beliefs of others. No one has the right to silence others by working himself into a fit of rage.