"Citizen King," a reverential chronicle of the final five years of Rev. Martin Luther King Jr.'s life, employs eyewitnesses to the history King made to recall it. Among them: Coretta Scott King, former representative William Gray, author David Halberstam, civil-rights veterans Joseph Lowery, Roger Wilkins and Taylor Branch, long-time political figure Andrew Young, former senator Harris Wofford, former attorney general Ramsey Clark and theologian James Cone.