Censorship at School

I was walking to class today and for some reason I decided to pick up a copy of the State Press. The article that caught my eye is about an ASU sophomore who hung a U.S. flag with the words "Ban This" in protest against Residential Life's policy of not allowing dorm residents to display messages in their windows. Students have been putting messages and pictures in their dormroom windows ever since I can remember-- what could possibly be the harm?