Dissent all you want, the moment you inconvenience the oligarchs enough your pretty little liberal democracy and marketplace of ideas gets shut down. When Greece wanted to renegotiate the sadistic neoliberal austerity regime the EU threatened them with total economic war of they didn't comply. When Bolivia re-elected the president who wanted to use the nation's natural resources for the people he was couped. In the UK Corbyn wanted to end austerity and he was brutally smeared as somehow just as bad as Hitler by the right-wing media monopoly. Even a milquetoast succdem like Bernie Sanders was pictured as some dangerous radical by the corporate-affiliated media and had the entire democratic party apparatus against him.

But yeah, you can go to a street corner and hold a sign while people driving by ignores you. That's something, I guess.