Make a plan to vote https://www.vote.org

Check your shit now, then right before election.

You won't change the world by suggesting firebombing a Walmart and then not doing it. But you can change the world by joining tenant and worker unions, helping build a community garden or assist with such, and instigating any form of mutual aid. Join Nextdoor. Join your Facebook No-Buy group.

Any one of these things even by itself helps more than just talking online.

Nextdoor and Facebook are dumpster fires a lot of the time but many of your older neighbors who want help or can give help ARE there.