So genocide is the answer? (spoilers of course)
I like how the director's answer to arrogance is more arrogance. Who is she to judge other human beings? Yes I can see how not holding others accountable for their actions, and not expecting them to act like decent human beings (because they are weak and incapable of that) is arrogant, but the decision she ultimately made was arrogant as well. To kill another human being for their failings implies you are better than them, and you deem them unworthy to live.
I'm curious what the director is trying to say here. Is there some hidden message he's saying about America's arrogance? I don't see it, if that's the case. If anything America is like Grace, committing genocide on those peoples who America deems not worthy. But the director is implying that is not arrogant thinking, and that holding people to a higher standard is okay.
I know I'm just throwing thoughts out there. Don't take them too seriously. I like this film because it does make you think. And there could be a couple different interpretations of what the director is trying to say. It's a very morally ambiguous film, it's why I like it. It's possible the director isn't trying to say anything, and just threw this material out there. Please don't criticize my post, but share your thoughts of the message at the end of this movie (if any).