They already got away with indigenous genocide without consequence, so I can certainly believe it.
Overthrowing them is a huge prisoner’s dilemma. We can barely even discuss specifics without getting the whole instance censored. The first person to fire a shot would likely act alone, and spend the rest of their life in prison.
I think the most realistic solution is p2p assassination markets built on top of blockchains, like Bitcoin Hivemind. That would avoid centralized organizations for which the leaders/admins are easy to bribe or threaten.
We’ve already seen what they do to our heroes. Don’t be a hero.