French mondo film featuring (among other things) a black magic sex ceremony, a frog geeking ritual, a German toilet sex slave dungeon and some rope bondage in Amsterdam's red light district.
The first five+ minutes are series of flashing lights and fast cuts, almost without any breaks. There are also a lot of flashing lights and scene cuts throughout
This page is for the 1986, French, documentary, Les Interdits du Monde, also known as Forbidden World.