One flew over the cuckoo’s nest is a movie directed by Milos Forman in 1975 interpreting Ken Kesey’s novel from the same name. The heterotopia here is a mental hospital which tackles the question about one’s madness and about devices of discipline within this kind of institution. The set of new rules here is frankly tyrannic and is justify by the supposed status of the patients.
There is a lot from Foucault to read about history of madness and how a society is extracting from itself people who are not obeying to the same system of rationality in order either to put them apart, or even worst to re-educate them.
When I observe that geniuses like Antonin Artaud or Camille Claudel have spent some time in those institutions (and institutional they are !), I have the intuition that the people we are calling crazy might just be people who had a glance at real freedom.