Easy place to start is slow rolls. Do the minimum speed limit in every lane of every highway. Do it every night on your way home from work. Leave early and do it on your way in. Especially in the liberal cities.
Don't want to be the loner? Just be the slowest. If you find someone slower, move over but don't pass.
Daily protest, like a daily Trump rally. Not violent, but makes people pay attention.

FYI: cover the shoulders too.