>And what happens if they don't find a consensus?
https://en.wikipedia.org/wiki/Rebel_Zapatista_Autonomous_Mun...
They strive to reach consensus, if they cannot find it they make decisions through majority and they are federation composed of popular assemblies of around 300 families each.
Zapatistas are indigenous Americans whose culture was almost completely destroyed, but calling them tribalist is unfair I would say, given that e.g they promote sexual equality.