I definitely believe that significant portions of the protest organization on many campuses were from out-of-town professional organizations, to Dax's point. However, that happens on many topics and campus political efforts. I can remember rocking the vote in the 90's per Adam Curry's and Down Town Julie Brown's encouragement.
I suppose the real question is how Hamasy are those organizations? Any sympathy for Hamas is worse than any sympathy for Israel, regardless of your beliefs. Having said that, Israel's behavior provides ample reason for legitimate protests against them without aligning with Hamas.