Find what and where you can fight best, and throw your weight behind it. Don't fall into dispair, that's what they are counting on.
Some fight for better laws, some fight for better politicians, some hack, some donate, some build, some propagandize, some host and archive, some preach and philosophize.
The best often do several of these things. Find what you're inclined towards and do it. We need every last drop of effort to defeat the corpos and their corrupt political allies.
You can't stop the signal.