It's entirely possible that sending the audience out feeling lousy was intentional

One of the worst ways to make a cult movie is to set out to make a cult movie.

It is an exhilarating, distressing, funny and profound film, with one of the more memorable film scores in years,

Very good movie overall, highly recommended. Most of the negative reviews don't have any merit and are all pollitically based. Give this movie a chance at least, and it might give you a different perspective.