Movies
'Batman Begins'
The Motion Picture Association of America said the film, starring Christian Bale and late actor Heath Ledger, contains "intense sequences of violence and menace".
It said: "There may be depictions of violence in a PG-13 movie, but generally not both realistic and extreme or persistent violence."
It was recently reported that Warner Bros considered cutting a scene in which Ledger's character The Joker pretends to be dead.
The Dark Knight is released in the UK on July 25.
More: Movies
Movie Reviews
'Extremely Loud & Incredibly Close' reviewTom Hanks features in a long and winding journey through New York after 9/11
At the Movies
David Lynch: 10 reasons to worship himIt's time to celebrate director David Lynch as the BFI screens a season of his films.
Movies Interviews
Max von Sydow 'Extremely Loud' interviewActing legend Max von Sydow on Extremely Loud & Incredibly Close, The Exorcist and Flash Gordon.
Box Office Charts
'The Woman in Black' wins UK box officeThe Woman in Black beats The Muppets and Star Wars at the the UK box office.
