It's absolutely a fair and timely question. I don't know.
I don't think we're quite at the point of suicide attacks being the only option, and, despite how one might interpret my post, I'm also not for posting snipers on roofs just yet. Besides, I don't think it is crazy to imagine that sniper attacks work way better and easier in movies than they do in real life. We're also not likely to have a whole army of trained snipers packing $5,000 rifles that are pretty much useless for any other purpose with $1,500 scopes (daytime only) firing ammo that costs $10 per round for a practice round. The really accurate stuff costs more. Much more. Each of those snipers needs a trained spotter ($1,000+ spotting scope for daytime operations or way, way more for night. Of course, that's the same for the sniper's scope.) Then those two need a whole highly trained, equipped, and conditioned support team, all of whom are on our side. Frankly, most of the folks who actually know how to do that voodoo stuff are on the other team.
So, I'm sorry, but armed conflict against these bubbas won't work for the same reason that the ammosexuals' "2nd 'mement gon' save us from tyrants" BS won't work. The tyrants have tanks, jets, missiles, the Army, Navy, Air Force, Marines, and Coast Guard plus all the National Guards and Reserves. ICE is just the first wave. We have already seen that there won't be any "I'm not obeying illegal orders" refusals from any of the services. Apparently, the armed forces command's motto is, "I have a career to think about, man! Semper Vulvae!" So that's what we're up against.
I do wish I knew something that would be both practical and effective. How do countries get themselves out of these fascist and/or totalitarian messes? I'm not thinking of any great examples from history that don't involve the intervention of outside forces (WWII -- hey, remember when we were the good guys?) or near-total collapse of the apparatus of the state (USSR -- maybe not a great example since they jumped right back into another dictatorship.)