Satanism is a group of ideological and philosophical beliefs based on Satan. Contemporary religious practice of Satanism began with the founding of the Church of Satan in 1966, although a few historical precedents exist. Prior to the public practice, Satanism existed primarily as an accusation by various Christian groups toward perceived ideological opponents, rather than a self-identity. Satanism, and the concept of Satan, has also been used by artists and entertainers for symbolic expression. https://en.wikipedia.org/wiki/Satanism
LaVeyan Satanism is a religion founded in 1966 by the American occultist and author Anton Szandor LaVey. Scholars of religion have classified it as a new religious movement and a form of Western esotericism. It is one of several different movements that describe themselves as forms of Satanism. LaVey established LaVeyan Satanism in the U.S. state of California through the founding of his Church of Satan on Walpurgisnacht of 1966. https://en.wikipedia.org/wiki/LaVeyan_Satanism
The Church of Satan is a religious organization dedicated to Satanism as codified in The Satanic Bible. The Church of Satan was established at the Black House in San Francisco, California, on Walpurgisnacht, April 30, 1966, by Anton Szandor LaVey, who was the church's High Priest until his death in 1997. In 2001, Peter H. Gilmore was appointed to the position of high priest, and the church's headquarters were moved to Hell's Kitchen, Manhattan, New York City. The church does not believe in the Devil, nor a Christian or Islamic notion of Satan. High priest Peter H. Gilmore describes its members as "skeptical atheists", embracing the Hebrew root of the word "Satan" as "adversary". The church views Satan as a positive archetype who represents pride, individualism, and enlightenment, and as a symbol of defiance against the Abrahamic faiths which LaVey criticized for what he saw as the suppression of humanity's natural instincts. https://en.wikipedia.org/wiki/Church_of_Satan
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