Alright, first:
Jack black appears in blackface in the film.
This makes sense within the context of the film, and is addressed as unacceptable by the members of the community his character is living in.
It doesn't add anything to the film, and it's a pretty surprisingly low note in a film that is otherwise about community unity.
I'm not remotely qualified to discuss this aspect of the film, but I felt it would be irresponsible for me to talk about the strengths of the rest of the film without mentioning it.
I love Yasiin Bey as an actor, and his character in this movie is great.
I'm avoiding spoilers as I discuss the movie because it's new enough and obscure enough that chances are good that not everyone who might want to see it will have seen it already.
It isn't actually new or obscure, but still.
This movie introduced an idea, though:
"To Swede" - The process of remaking a commercial film without a commercial budget or professional actors. The resulting film is a "sweded" film.
The etymology for this turn of phrase within the film aren't important to the rest of this discussion, but "Sweded" is useful shorthand for a specific visual style and concept that I want to discuss at length.