To reiterate: This is a great film, but most definitely not for kids.
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In addition to De Niro, the film's cast includes Cybill Shepherd, Albert Brooks, and a 12-year-old Jodie Foster as Iris, a child sex worker Bickle befriends on one of his insomnia-fueled cab runs.
Schrader said it's not a dream sequence, but it ends where it began, with Travis driving around the city and fueling his hate, waiting to let it build up and explode again.
It is based on German journalist Jürgen Hinzpeter's interactions with driver Kim Sa-bok; however, as very little information on Kim was known at the time the film was made, most elements regarding his life and the events that happened to him outside of Gwangju are fictional.
Taxi Driver includes several scenes with sexual content and nudity. A 12-year-old prostitute plays an important role in the movie, and there is a disturbing scene where a gangster dances with and gropes the young girl. It is heavily implied that he has been raping and molesting her.
Travis Bickle (Robert DeNiro), age 26, is Taxi Driver's lonely, alienated “hero.” Yes, he's a Vietnam War vet, ex-marine, and likely has his share of PTSD.