Broadly speaking, there's three scenarios for a war:
- State vs state action
- Insurgent vs occupiers
- Insurgent vs own state
#1 was the American Civil War. We aren't getting that again.
No, I'm not wasting everyone's time explaining why.
#2 is what you had in Iraq. Insurgents vs terrorism is a semantic line, but the core point is that
the insurgents hide within the civilian population. They rely on civilian support and infrastructure to be effective and escape being overwhelmed by state force.
(Vietnam was also #2, except the insurgents hid in the jungle. In America, there is little terrain that could hide a group from modern surveillance. So that option is either limited or impossible outside of lone fugitives.)
#3 is what happened in Syria, and it's what Antifa is trying right now. They suck at it, and the state is taking it very easy on them. But that's the model they're following: fight against fixed state objectives, hide within the civilian population, use civilian infrastructure to plan and carry out attacks.
Keep in mind that the success of strategies #2 and #3 rely on the opposing army not being willing to attack civilians, or at least being unwilling to crack down on it enough to find the insurgents.
The Boogaloo wouldn't be any of these. It would be a 4th category: insurgent vs insurgent
within the same civilian population. And that's not a sustainable model.