Specifics, Robert!
1. Write short, plain letters to local editors and officials. Take a position. You need not prove it.
2. Help local candidates run.
3. Join a community or government advisory group.
4. Donate. Yes, even ten bucks. Even five.
5. Buy local.
6. Speak at town/county public input sessions.
7. Wear a message on your tee-shirt.
8. Consider running for school board.
9. Plant a BLM yard sign. (Have spares.)
10. Fly a pride flag.