American college campuses are starting to resemble George Orwell’s Oceania with its Thought Police, or East Germany under the Stasi. College newspapers have been muzzled and trashed, and students are disciplined or suspended for “hate speech,” while exponentially more are being shamed and silenced on social media by their peers. Professors quake at the possibility of accidentally offending any student and are rethinking syllabi and restricting class discussions to only the most anodyne topics. A Brandeis professor endured a secret administrative investigation for racial harassment after using the word wetback in class while explaining its use as a pejorative.

As college campuses have become bastions of rigorously enforced political correctness, the limits on speech have come crashing down in the real world, with the presumptive Republican nominee for president dishing out macroaggressions on a daily basis. Donald Trump’s comments about the alleged criminality of Hispanics and Muslims, and about how fat or ugly his female enemies are, need no restating here, but many of his words would almost certainly be prohibited speech on most college campuses.

Business leaders, authors, politicians and even comedians are now routinely barred from American campuses. Springtime—the commencement-speech time of year—is now dubbed “disinvitation season.” Students and faculty debate the moral fitness of announced commencement speakers on social media and engage in bitter fights over whether even mildly controversial speakers deserve to be behind a podium. Some disinvite themselves. Christine LaGarde, the head of the International Monetary Fund and one of the most powerful women on the planet, canceled a speech at Smith, one of America’s pre-eminent women’s colleges, after a Facebook protest against her by some students and faculty for her connection to “global capitalists.” Those who turn up can find themselves facing a heckler’s veto, as mild-mannered University of California, Berkeley, Chancellor Robert Birgeneau discovered in 2014 when he had the temerity to show up at tiny Haverford College without first apologizing for how his campus cops had treated Occupy Wall Streeters.

As students are labeling more and more words as hate speech, demanding more trigger warnings and shouting down both commencement speakers and comedians, the censorship flashpoints can be sorted into three topics: sex, race and Donald Trump.