“If this fits into a genre at all, it could be that of Afrofuturism. Portraying an imagined future, a surreal present, or a painful, unshakeable memory, the world of the film could be a utopia — a planet inhabited and made by black people expressing themselves freely; it could also be a dystopia, in which the words and physical convulsions of grief, trauma, and anger are sublimated by a danceable soundtrack.”