Which you're perfectly free to do ^_^
And I'm sure that IRL there are cities where the common people aren't too fond of the police either :p I'd still say it's different from killing foreign enemies. But that's me ^^
It's possible. On the other hand, it's rarely the common people who make decisions (except by threatening riot and table-flipping :p ). And while it's the one-percenters who rule the monetarist section, there have to be a group of well-to-do and moderately wealthy citizens who actually have a shot at influencing things. And I'm not quite as certain those are as against the monetarists and brass blades as the common people.
I don't quite agree with that, though. While there's certainly a fair amount of hand-waving done by game creators, I'd like to think that there's a mess of complex rules and regulations limiting the characters (PCs and NPCs alike) in the game world. Such as the Seedseer and Admiral leaving at the prompting of their aides. While they'd like to stay and help their friend, politics won't allow them to. Not without severe consequences. So they withdraw. While politics tend to annoy me because I'm generally an impatient person, I have no issues with seeing the logic of that particular action.
That said, I agree with what many others have said, that it would have been good if there had been choices. Even if the choice to struggle and/or try to escape had in the end resulted in the same 'captured and thrown to the floor in the banquet hall' scene, even if the Scions had forced you to go on without them despite your arguments, it would have provided a little bit more of that individuality that so many players need. So on the whole I agree that the story ending could have been a lot better, but at the same time I can understand the (forced) events in the cutscenes. =)