OK, it's probably just a case of a couple of rednecks doing the sort of thing rednecks do (attack people with whom they disagree). But it's difficult to deny that the rhetoric used these days by the "traditional values" pundits (including those who swirl around the manufactured creationism/"intelligent design" "controversy", for example) is often an incitement to violence. In this case, a Religious Studies professor at the University of Kansas, Paul Mirecki, sent out a private email mocking the creationist crowd and describing his plans for a religious studies special topics course that would "...be a nice slap in their [fundamentalists'] big fat face by teaching it as a religious studies class under the category ‘mythology’". Because of the email, he was forced to apologize and cancel his class. Because it's important for an instructor's mind to be a blank slate before teaching a class, I suppose. I guess I'd better think twice about emailing out information on my upcoming algorithms class; wouldn't want the wrong people getting the idea I have already formed an opinion on red/black trees.
P.Z. Myers at Pharyngula says that he may have some additional details to post about this soon.