Last April I made a sign that says "WE ARE SLEEPWALKING INTO NUCLEAR WAR" and I spent some time holding it up on a busy intersection near my home in Chattanooga, TN. I decided to do this after seeing the way I was shadowbanned on social media for occasional posts in protest of clearly harmful media narratives. I don't think that I am likely to change the course of events at all, but it beats just sitting on your hands and sulking about it:
https://twitter.com/realTaraHarris/status/152157741487430451...
https://twitter.com/realTaraHarris/status/161793964289205862...
I am saddened that a larger anti-war movement has not materialized by this point. Something foul happened to American media after the second Iraq war.
Edit: go head and downvote me. I'm just honestly answering the OP's question. I'll protest the American empire, in real life on the street, for an additional hour for each downvote I get.