Fifty years after the birth of the free speech movement at the University of California, Berkeley, officials across the UC system are encouraging faculty and students to purge mundane, potentially offensive words and phrases from their vocabularies. Administrators want members of campus to avoid the use of racist and sexist statements, though their notions about what kinds of statements qualify are completely bonkers. “America is a melting pot,” “Why are you so quiet?” and “I believe the most qualified person should get the job,” are all phrases that should raise red flags, according to the UC speech police. Requests for...