I get kind of annoyed whenever I hear Americans saying with all the pride in the world that they live in a free country. Mostly because that expression is commonly used in defense of questionable acts, but also because they say it like freedom was an exclusivity of the US. Fortunately, films like this exist and make me value every bit of liberty and democracy we have, as much as they're flawed.
The movie itself is superbly directed, the desolate and beautiful scenery is exquisitely explored, tightly edited and features some huge performances. Some sequences are definitely sticking to me for a long time, like the ball-less football and the woman singing while getting punished for it.
I don't use the word that often, but that's a picture that deserves it: Essential.