This film itself outlines the cruelty inflicted on a bunch of teenagers kidnapped, tortured and molested for months by ruling members of the Italian aristocratic set, or ''libertines" as they are referred to. It is sick, depraved and filthy, in fact it is the only film I've not been able to watch in one sitting due to the cruelty and sexual sadism inflicted on said teenagers.
It was widely praised by film critics in its time but even more widely banned by the world at large... oddly enough the director Pasolini was murdered a few months before its release. It is available now on DVD/BR but I'd assume it would take some work to find it. Be warned though, it's a hard one to watch, a litany of human perversion and sadism if you will.