The Satanic rite known as the Black Mass is replete with sexual imagery and orgiastic debauchery, as described in this quotation from Dennis Wheatley: “The salient feature is that the representative of the Power of Light should be abjured and the Power of Darkness invoked by the offering up of blood and semen. To be of maximum potency a Black Mass should be performed by a priest, and, should he have been unfrocked, this makes no difference to the power inherent in him. But anyone sufficiently debased can perform a ritual of this kind. At a black mass everything possible is done the opposite way to the correct procedure. The cross on the altar is upside down, crooked or broken. The acolytes should be young men who readily give themselves to anal intercourse. The celebrant wears a cape embroidered with serpents and other Satanic emblems. He is naked beneath it, and it is open down the front, exposing his erect penis. The congregation should, preferably, be wearing animal costumes and masks. The litany and prayers are recited backwards. The ceremony is performed over the naked body of a young woman, who lies on the altar. The celebrant sacrifices an offering by cutting its throat and catching its blood in a chalice. Finally the priest copulates with the woman on the altar, plunging his lust-hardened penis in and out of her lissome young vagina. The congregation, as though possessed by demons, frantically slake their lust on one another in every way possible.”
The image above shows a depiction of the Black Mass by the early 20th century artist, Martin van Maële.