The provocative documentary about the death of Princess Diana, screened Friday in Cannes, depicts Prince Philip, the queen's husband, as a psychopath and the British royal family as racist "gangsters in tiaras."

The provocative documentary about the death of Princess Diana, screened Friday in Cannes, depicts Prince Philip, the queen's husband, as a psychopath and the British royal family as racist "gangsters in tiaras."

"Unlawful Killing'' deals with claims that Princess Diana was murdered by the British establishment and the crime covered up.

An inquest held 10 years after Diana's 1997 death in a Paris car crash deflated claims of a conspiracy, blaming her driver and pursuing vehicles.

But the movie by actor Keith Allen, father of singer Lily Allen, revisits the theories and was reportedly funded by Mohammed el Fayed, owner of Harrod's, whose son Dodi was killed in the crash with Diana.

It has already been criticized in Britain for showing a picture of the dying Diana moments after the crash. And its harsh criticisms of Britain's "feudal" monarchy are sure to cause further furor.

The film was screened Friday on the fringes of the film festival for buyers and journalists.