Xitter is the least of the issues considering his tie to China and Russia and the all-you-can-eat buffet happening right now in the US government.
Coordination should not be about "hey, let's all make a lot of noise about his last move", because you're overwhelmed. It's about making sure not too many people are working on the same line.
You pick a line. One where you can act.
You get one executive order rescinded. Someone else work on another one. You legislate one doggy doger at a time. You focus like crazy. (First action to focus is, of course, to delete your Twitter account.)
You make noise about all the times where you win, and they loose.
In two years, you get the voters out.
If you don't have any other control then "not playing their game, and wait", that's at least something. There's probably a food bank close to your place. Keep the lights on there.