@HawlSera oh, yeah but its initial run in Italy was less than a month before it got banned. Same thing happened a few times elsewhere. It had a run in the US. Some countries preemptively banned it.
In my country it was banned until 1997 which is when I saw it on the big screen, but we didn't get legal distribution for DVDs until this century.
I've seen Salo but I really wouldn't call it good. I nearly did walk out, and I sat through Battlefield Earth (although admittedly I was drunk, which helped a lot)
You say that, but supposedly the film has quite the anti fascist leaning that eventually got the director Pier Paolo Pasolini killed by Italian fascists.