April 21 marks the 50th anniversary of the death of Pedro Albizu Campos. Most Americans likely haven't heard of Albizu Campos or his plan to challenge the United States' control of Puerto Rico. His supporters remember him as an organizer, an intellectual, and a revolutionary. The FBI and the US government labeled him a radical, a terrorist, and a criminal. Albizu Campos' story and the history of his ill-fated movement are chronicled in War Against All Puerto Ricans: Revolution and Terror in America's Colony, a new book by Nelson A.