Between the national protests, there are lots of local activities that you can be involved in, as well as other related activist groups who organize their own anti-Trump actions.
www.courtlistener.com - Here's the partial Final Judgment by Federal Judge Karin Immergut which says Trump violated the Tenth Amendment and "Defendants’ actions exceeded the scope of the President’s authority pursuant to Title 10, United States Code, Section 12406." That...
www.courtlistener.com - A preliminary injunction has just been issued that blocks Trump from sending National Guard troops from any state to Oregon for the next week until she issues a final decision on the merits of the case.
ACAB (All Cops Are Bastards) is a group focused on leaks, hacks, and news about police and federal agencies who are acting beyond the bounds of the United States Constitution.