Well, maybe it was, but if so it was a crime of self-hatred...

Claremont Police and the FBI have concluded their investigation into the car vandalism and determined that the crime was committed by the victim herself. Here's an article from the Pasadena Star-News, which is free. There's a longer, better article in the LA Times, but registration is required.

This is, sadly, probably the best possible resolution of the case. As I hoped, the culprit was a lone, bigoted asshole. Bonus: it wasn't a student, or even a member of the permanent campus community, as Dunn is merely a visiting prof.