Recently, I've discussed the way pagan beliefs were given a Satanic cast by Christians, who turned pagan worship ceremonies into Black Masses full of sodomy and blasphemy. In 1862, Jules Michelet tried to paint a more sympathetic (if inaccurate) portrait of medieval witches by describing their faith as a pagan-influenced feminist rebellion against Catholic patriarchy. His book, La Sorcière, is known in English as Satanism and Witchcraft, and of course the weird art used to illustrate the 1911 printing of the book is something to behold.
If you thought the images of women kissing Satan's or a goat's buttocks were bad, this little number puts them to shame. Behold the Black Mass as drawn by Martin van Maele, a French illustrator famed for his erotic art.