Last part of the "Trilogy of Neurosis" also including Investigation of a Citizen Above Suspicion (1970) and The Working Class Goes to Heaven (1971).
The title is a reference to socialist Pierre-Joseph Proudhon's famous assertion that "property is theft!"
When this film was released in Italy, it was seized for a period because of the sex scenes between Ugo Tognazzi and Daria Nicolodi, both nude. Tognazzi protested against "These bourgeois who write anonymous letters then in private do all kinds of things. It is useless for them to protest because they see Daria Nicolodi doing certain things to me when at home their wife does the same thing and if she does not have it done by a prostitute." He also said, "Believe me, the more boobs and butts you can see , the better."
Italian censorship visa # 62682 delivered on 28-6-1973.