Satanis

Satanis The Devils Mass is a 1970 American documentary film about Anton LaVey and the Church of Satan. It was directed and produced by Ray Laurent.

A compilation of ritual magic footage and interviews with LaVeys family, neighbors, and CoS members. Also interviewed are Christian priests and Mormon missionaries.Display ads at theater showings read Satanis is the most pertinent, and perhaps the most shocking film of our time. But its definitely not a movie for everyone. If you choose not to see it, we will understand. ........

Source: Wikipedia