The administration at the University of Northern Colorado in Greeley, CO has posted a list of "persona non-grata" at the University. These are people who are not allowed to step foot on campus and now have their faces thrown out on the web for violations such as being anorexic or not appearing for a campus disciplinary hearing at the advice of his lawyer for charges that were ultimately dropped.
Following the Virgina Tech tragedy, I am expect universities to be spending millions of dollars outfitting their campuses with expensive security devices, safe rooms, lockdown procedures -- and let us not forget security "consultants". Students are being blacklisted and publically humiliated by the same institutions that refuse to "reveal the identity" because of "privacy violations" for all sorts of other reasons" (from the Denver Post):
"This is a healthy discussion," [University President Kay] Norton wrote about reaction to the website. "However, we do not and will not talk about individuals who receive persona non grata orders."
While universities, including public universities, will spend millions of dollars each into the latest technology to assure that they are doing something. But, the most effective intervention would have been listening to his professors who notified authorities that they were concerned about his behavior and writings. But, that's not "sexy" or high-profile, so the impression of doing something is more important than actually doing something.