content: This is one of my favorite movies, not least because of the haunting score that plays during the opening credits and recurs throughout. I'm surprised no one else has mentioned this.The movie was filmed in New Orleans--I was there during its filming, and streets were constantly being blocked off--but I'd say it's intended to be New York or Boston. Note the Irish tenor of the gangs and the police chief.I don't know what the symbolism of the hats is. Does anyone?