George Will has a good piece on the leftward tilt of academia:

Academics such as the next secretary of state still decorate Washington, but academia is less listened to than it was. It has marginalized itself, partly by political shrillness and silliness that have something to do with the parochialism produced by what George Orwell called “smelly little orthodoxies.”

Many campuses are intellectual versions of one-party nations—except such nations usually have the merit, such as it is, of candor about their ideological monopolies. In contrast, American campuses have more insistently proclaimed their commitment to diversity as they have become more intellectually monochrome.

They do indeed cultivate diversity—in race, skin color, ethnicity, sexual preference. In everything but thought.