The New Yorker published a story today titled, “How Social-Media Trolls Turned U.C. Berkeley Into a Free-Speech Circus.” Most of the content is about the battles over free-speech at Berkeley last year, starting with Milo Yiannopolis. Author Andrew Marantz asks law professor Erwin Chemerinsky about the limits of speech and gets an answer he apparently doesn’t like: Voltaire, anti-Semite and sage of the Enlightenment, is credited with the aphorism “I disapprove of what you say, but I will defend to the death your right to say it.” Chemerinsky, arguably the foremost First Amendment scholar in the country, believes, in the...