You seem to really not understand the issue. You keep saying free speech is protected like it was violated. They aren't being kicked out or arrested for "protesting" they are being kicked out and arrested for squatting and being unruly and trashing the places they are "occupying."

They are trying to live in public places that have curfews for people's safety. When asked to respect that law they refuse to leave. When groups of people refuse to leave they get arrested for trespassing, etc

In the Oakland scenario they barricaded themselves in to the plaza and were hostile toward police so they used non lethal force to clear them out.