|Some dare call it|
Alberto Rivera (Born September 19, 1935 in Spain – Died June 20, 1997 in Oklahoma) was a Spanish-American fundamentalist Christian evangelist significant in the extreme anti-Catholic wing of Protestantism.
He also claimed to have been a former Catholic priest himself, until he learned of the Vatican's plans for world domination. The story goes like this: Alberto Rivera attended Catholic seminary, where the Jesuits trained him to infiltrate Protestant churches to destroy them. He also learned the Vatican was responsible for, among other things, the Nazis, Communism, Freemasonry, the assassinations of John F. Kennedy and Abraham Lincoln, and the Holocaust, that nuns who got pregnant secretly sacrificed their newborns to Mary, and other similarly bizarre claims. Upon learning these things he denounced the Catholic Church, and was forcibly placed in a mental institution by the Jesuits for doing so. Near death from abuse in the mental facility, he escaped from Spain to London to rescue his sister from a convent, also near death from self-flagellation (supposedly practiced in the nunnery), and they fled to the United States.
 The reality
In reality, his claims to have been a Catholic priest and his other claims have been thoroughly disproven. Indeed, those who checked out his claims found instead that he had a long history of swindling, was wanted in Spain on those charges, and had collected money for a Spanish college while in the U.S. which never received the money. Nonetheless, in the U.S. he started a "ministry" called the Antichrist Information Center to expose the Catholic Church. His sister was not a nun, but was working in London as a live-in maid. He also blamed the Vatican for things that happened after he allegedly left the Catholic Church, such as the Jonestown mass suicide. He eventually hooked up with Jack Chick, who created several comic books based on his claims (Alberto, Double Cross, The Godfathers, The Force, Four Horsemen, and The Prophet). Chick continues to promote Rivera's story as true. 
Alberto Rivera was also a King James Only advocate, and claimed all other Bible translations were created by the Jesuits to deceive Protestants or were translated from manuscripts corrupted by the Vatican. He (along with John Todd, who claimed modern translations were funded by the Illuminati) appear to be the sources of Jack Chick's own conversion to King James Onlyism.