One week later, Trump occupied DC. Two weeks later, again thanks to the Spirit Squadron, thousands of people started chanting Free DC in the 51st minute of games - including fans at away games.
There's a lot more I've done, and so much others are doing, but hopefully that gives you an example of one route in.
There are so many ways to be involved. It's not just resisting armed thugs on the street. And if you do have to resist armed thugs on the street, isn't it better to do so with friends?