Jay Roach Director, Executive Producer Bryan Cranston Lyndon B. Johnson Actor, Executive Producer Anthony Mackie Martin Luther King, Jr. Actor Melissa Leo Lady Bird Johnson Actor Bradley Whitford Hubert Humphrey Actor Frank Langella Sen. Richard Russell Actor Joe Morton Roy Wilkins Actor Stephen Root J. Edgar Hoover Actor Marque Richardson Bob Moses Actor Aisha Hinds Fannie Lou Hamer Actor Todd Weeks Walter Jenkins Actor Mo McRae Stokely Carmichael Actor Spencer Garrett Walter Reuther Actor Keith Barber Older Man Actor Robert Schenkkan Screenwriter, Executive Producer Steven Spielberg Executive Producer Darryl Frank Executive Producer Justin Falvey Executive Producer