Mean Streets is a 1973 crime film directed by Martin Scorsese and co-written by Scorsese and Mardik Martin. The film stars Harvey Keitel and Robert De Niro. It was released by Warner Bros. on October 2, 1973.
Definitely not a movie for everyone; perhaps the best example of a sociological character study if I've ever seen one. The insight into a psychopath is quite unsettling yet unfiltered. On one level, at least mine, it's kind of fascinating, even though it's also exceptionally disturbing.