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Madalyn Murray O'Hair (April 13, 1919 - 1995) was an American atheist, founder of American Atheists and campaigned for the separation of church and state.
In 1960 she began a lawsuit (Murray v. Curtlett) against the Baltimore, Maryland School District in which she claimed it was unconstitutional for her son William to participate in Bible readings at Baltimore public schools.
Public opinion was such that in 1964 Life magazine referred to Madalyn Murray as the most hated woman in America.
Chased out of Baltimore, Maryland by Christians for being an Atheist and later killed by unknown in Texas.
Further reading about Madalyn: The Chapter "The Passion of the Antichrist" (p.18 ff)in Robert Anton Wilsons new book Email to the universe.