Without a doubt : Events shown in this film must have taken place.

Salò o le 120 giornate di Sodoma (1975) directed by Pier Paolo Pasolini

Everybody knows that Pasolini was a great artist whose choices of topics stirred the entire Italian society.The world knows him better as a film maker.Like some of the most successful filmmakers working in cinema today like Gus Van Sant,Todd Haynes,Francois Ozon etc,he too was a homosexual.It is believed that at the end of his career he felt angry about his homosexuality and that is the reason why he showed it as something of a bad,evil thing. One close look at the film will show that it is about the misuse of power.Pasolini wanted to depict that when crooks and rogues acquire power,they invariably end up misusing it thereby endangering the entire human society.There are traces of autobiographical elements too as he must have seen many of such atrocities heaped on common people.It is true that this film is a controversial one but that should not be an excuse to disregard it.This is a film that must be seen by all and sundry in order to know how a wicked human mind functions.