Protest Organizing

Just wondering if people know where I or others can get involved in the area with what is going on in the world right now. I know there is a protest at all 50 state capitols tomorrow at noon, which I plan to attend and hope to see other locals there. But other than that are there groups in town to be apart of? Or should someone start organizing groups in the community? I wouldn't mind helping with that. If thats the case, where might be a good place to start? I just can no longer sit back, thought it might be best to start locally first.