Betsy Nemark links to a Denver Post story about Phil Mitchell, another professor under siege at Colorado University. His crime:

Mitchell taught at the Hallett Diversity Program for 24 straight semesters. That is, until he made the colossal error of actually presenting a (gasp!) diverse opinion, quoting respected conservative black intellectual Thomas Sowell in a discussion about affirmative action.

Sitting 5 feet from a pink triangle that read "Hate-Free Zone," the progressive head of the department berated Mitchell, calling him a racist.

"That would have come as a surprise to my black children," explains Mitchell, who has nine kids, as of last count, two of them adopted African-Americans.

Then, Mitchell had the audacity to use a book on liberal Protestantism in the late 19th century. So repulsed by the word "god" was one student, she complained, and the department chair fired him without a meeting, he said.

There's a key quote by Mitchell that sums up a huge difference between liberals the left:

"People say liberals run the university. I wish they did," Mitchell says. "Most liberals understand the need for intellectual diversity. It's the radical left that kills you."

Update: Somewhat related thoughts on liberals, leftists and intellectual diversity, here.

Vermouth-infused Update: Dead-on-target thoughts, from Stephen Green.