"Protestors" who obstruct public rights-of-way are impeding commerce, public safety, and national security - they should be charged as terrorists. Acts are not protected speech. Infringing upon the rights of others and the Government is not protected speech.
The appropriate place to resolve issues is at the ballot box.
Remember, the revolutionary mindset is that the ends justifies the means; so, they will ignore them will of the People and violate Civil Rights and Natural Rights of Man to get their way.