I have to agree with John - dumb is dumb! Anytime you run into this type of situation: a dumbass with some authority, you need to tread lightly. If possible you need to try to go over their head to someone higher up with, hopefully, a brain. The comment expressed by the other campus security was disturbing also as I don't believe that first amendant rights are restricted on public school grounds. Private grounds yes, public, no!
On a lighter note: do you suppose this guy named any of his children after the great Roosevelt Grier, the football player turned actor?