Raya Dunayevskaya (born Raya Shpigel, Ра́я Шпи́гель; May 1, 1910 – June 9, 1987), later Rae Spiegel, also known by the pseudonym Freddie Forest, was the American founder of the philosophy of Marxist humanism in the United States. At one time Leon Trotsky's secretary, she later split with him and ultimately founded the organization News and Letters Committees and was its leader until her death. Source: Wikipedia (en)