[Danzig]

i think the problems involved aren't just from one part of the whole equation.

you have protesters ( and yeah, the hippy description is FAR from accurate) who admittedly are pushing the limits; even to the point of trespassing, etc. they absolutely will push as far as they can. perhaps even too far
they are told to move on, they don't. they're told to break camp, they don't.
you have the police, in some cases several different forces working together such as in oakland or on the campus a few days ago which causes a whole new set off issues (not everyone has the same training, guidelines, etc), with administrators saying the kids have to go, and go now.
then you have the chiefs of police, mayors, city councils, etc.
the police are given a job to do, the protestors have their own agenda, and of course city govt has theirs, property owners have theirs. a mix right for an explosion, or several.
and with this society as litigious as it is, i'd have to think the owners of the properties being squatted on are having a collective heart attack...how would you like all that liability hanging over your head?