This is such nonsense.  ADAPT had met with Cory and his staff several times prior to this.  First Amendment rights do not permit criminal trespass.  This was private property.  They gave them several days to make their case and get out, and when it became obvious their intent was to get arrested, they had no choice but to force them out, as peaceably as they could.  The police are not there to engage in political discourse, they are there to enforce violations of the law.