There's one really easy way to reject their control of public discourse.

The only winning move is not to play

Go offline. Get out into your communities and take real, direct, action to help each other. Reject the illusion that you can make waves by playing within their tightly controlled artificial spaces and act within god's world, where no man can silence your voice. Not only will your real impact upon your community be much greater, but even your own life will improve substantially.