> Let's not pretend that you are allowed to teach at Harvard, at least in certain departments, without a very specific political leaning. And certain other political leanings are not allowed in any department.

That's complete nonsense. Harvard's law department is run by Mary Ann Glendon, notorious catholic dominionist and staple of anti-abortion activism in the US.

The "liberal college professor" meme is a right-wing canard, which only holds true as far as people who believe in evidence driven investigation and deep thought, such as those who serve in science departments, are unlikely to form a religious conservative reactionary worldview.