Eugene Volokh Plans To Keep On "Microaggressing"
From a blog post by Eugene Volokh, here are two things I believe from the University of California's list of microaggression examples for professors and others in university classrooms to avoid:

[Microaggression Examples:] "I believe the most qualified person should get the job."

"Affirmative action is racist."

They define "Microaggressions" as "brief, subtle verbal or non-verbal exchanges that send denigrating messages to the recipient because of his or her group membership (such as race, gender, age or socio-economic status)."

UCLA law prof Eugene Volokh blogs in the WaPo on where he stands -- and with the chill this puts on the free speech of non-tenured faculty:

Well, I'm happy to say that I'm just going to keep on microaggressing. I like to think that I'm generally polite, so I won't express these views rudely. And I try not to inject my own irrelevant opinions into classes I teach, so there are many situations in which I won't bring up these views simply because it's not my job to express my views in those contexts. But the document that I quote isn't about keeping classes on-topic or preventing presonal insults -- it's about suppressing particular viewpoints. And what's tenure for, if not to resist these attempts to stop the expression of unpopular views?

But I'm afraid that many faculty members who aren't yet tenured, many adjuncts and lecturers who aren't on the tenure ladder, many staff members, and likely even many students -- and perhaps even quite a few tenured faculty members as well -- will get the message that certain viewpoints are best not expressed when you're working for UC, whether in the classroom, in casual discussions, in scholarship, in op-eds, on blogs, or elsewhere. (Remember that when talk turns to speech that supposedly creates a "hostile learning environment," speech off campus or among supposed friends can easily be condemned as creating such an environment, once others on campus learn about it.) A serious blow to academic freedom and to freedom of discourse more generally, courtesy of the University of California administration.

A "hostile learning environment" is not what is created by free speech; it's created by an environment in which it is banned. This is an environment in which you can be condemned for not being able to predict which opinion of yours will offend some person -- some person sniffing like a truffle-hunting pig for comments that give them an ouchie.