One thing that's interesting on the show is that every person in it thinks they're the good guy and the one with the just cause...
That said, I think the show's really over estimating the sympathy we're meant to have for the flag smashers. I understand their cause, and sympathise with it, but they're just more violent terrorists doing violent terrorist shit.
They also made it clear they would kill Walker, so I fail to see why I'm meant to feel sympathy for them at the end.