Let's listen to this little vixen explain how they provoked the police:
So, she complains that university "riot police" are on "her campus"--clearly she wishes they weren't--admits that she and her compatriots surrounded the officers and told them that if they wanted to leave they'd have to go through the students, and then she's surprised that the officers responded?
I'll grant that the officers did not appear to be under imminent threat; on the other hand, they shouldn't have to wait until they're in jeopardy before they act. I also grant those who have police power given to them in our society must be held to very high standards of conduct, as they have the power to take away that which is fundamental to our ethos as a people--freedom.
Did the officers respond appropriately? If you tease the nice dog enough, should you really be surprised when it nips at you?
Initially I was against this police behavior. Now I'm not so sure.
Update, 12/4/11: It's always nice when a fellow blogger links :) Coach also adds information from former students of his at Davis.