As I recall, posting cartoons on the door of your faculty office is an important pasttime of faculty when they were granted their own office space. But as an earth science major, most of the cartoons I saw were a variety of plate tectonics jokes. Apparently in other departments, it’s a bit more contentious a practice:

The first complaints date back to 2005, and the professor, Richard Crandall, was ordered to remove the materials from his door in 2007 (he eventually complied). Items included a photo of Ronald Reagan, pictures mocking Hillary Clinton, a sign posting a “Notice of the Weekly Meeting of the White, Male, Heterosexual Faculty and Staff Association (WMHFSA),” and various cartoons about abortion, Islamic terrorism and other topics. One depicts two hooded women looking over a photo album. One says, “And that’s my youngest son, Hakim. He’ll be martyring in the fall.” The other replies, “They blow up so fast.”

The university argues that the postings contribute to a hostile environment and therefore do not fall under First Amendment protections, although such arguments have not fared well historically in the courts. No lawsuit has been filed, but in the past some professors whose cases have been publicized by FIRE have pursued legal action….

According to the article, the university says it is not the political nature of the cartoons, but the denigration of the religious beliefs of others.