Marilyn Jean Buck was an American Marxist and feminist poet who was imprisoned for her participation in the 1979 prison escape of Assata Shakur, the 1981 Brink's robbery and the 1983 U.S. Senate bombing. Buck received an 80-year sentence, which she served in federal prison, from where she published numerous articles and other texts. She was released on July 15, 2010, less than a month before her death at age 62 from cancer.