Conservatives in Academia

Some students and professors at U. of Minn. Law School are protesting a decision to have one of the authors of the torture memo teach a class there. (The guy is currently an associate professor at a nearby shcool.) I can understand disagreeing (strongly) with the policy, but I don't think it reaches a level where the person should not be allowed to teach at your school. If he were out there promoting Nazism, I could understand, but this doesn't compare.