So here is what you do:
1. Write down three names of men you thoroughly know, implicitly trust, and who are like-minded.
2. Meet in private and ask them to each bring in three men of the same ilk.
3. Keep repeating the process. It's your new hobby.
4. Choose activities to meet. Bowling, fishing, shooting, whatever.
5. Keep EVERYTHING off the internet. I said everything. Your communication is sneakernet, SIGNAL and burner phones that were purchased in cash from another county from a mom and pop store.
Congrats. You just formed a militia that cannot be detected and cannot be penetrated.
Given the state of blackmail in this country you first item on the list is your weakest point.