Go see this. If you like post-apopoc movies, this is sort of thing you will love.
DO NOT LET YOURSELF GET SPOILED.
Brief non-spoilerly comments below the jump.
It is not a perfect movie - the world building is a bit iffy, the class warfare retortic was laid on a bit thick, and the last bit was weaker than the first 2/3.
But wow. Visually, story-wise, this was *great*. Strong, *strong* acting throughout. Horrifically believable ugly things that people do to each other. Heartbreaking beautiful sacrifice.
It is insane that this didn't get a wider release.