(Disclaimer: I voted against Trump and anyone who supported him in my state.)
If they can afford a gun they likely have one, but rather than forming sects and training it seems like the moral thing to do, causing the least amount of harm to anybody, is wait for the enemy to attack first, if they do attack.
Joining a small militant group or ecoterrorism sect not only brings personal risks but also runs the risk of harming innocents, and being manipulated by other interested parties who would like to see destruction on American shores.
When you say wait for the enemy to attack, how will you defend your community in that eventuality if you haven’t trained to do so?
My “community” is the enemy who might attack me. Our dumb fuck neighbors voted a fascist in, and they’re not any more or less trained than I am. Probably less actually.
Your community in this case doesn’t mean your neighborhood. Your community means the people who you identify with and/or care about. If you truly believe that your neighbors are on the cusp of becoming death squads who are ready to gun down all the [insert your people] in town, it might be a good idea to have your friends know that the plan is to meet up at someone’s place that is more defensible. Or to get to the least mobile person. Or to get in a car with a particular destination in mind. Whatever your plan is, if the enemy is armed, it might be a good idea to also be armed.