Colin Salmon
— Narrator (voice)
Edwin Moses
— Self - 400m Hurdles; Olympic Gold 1976, 1984
Kwame Kwei-Armah
— Self
Delroy Lindo
— Self
Steven Millner
— Self - Professor, San Jose State University
Harry Edwards
— Self - Professor Emeritus, UC Berkeley
Lee Evans
— Self - 400m, 4 × 400m Relay; Olympic Gold 1968
Tommie Smith
— Self - 200m; Olympic Gold 1968
Art Simburg
— Self - Former San Jose State student
Lynda Huey
— Self - Former San Jose State sprinter and student
Malcolm X
— Self (archive footage)
Mohamed Ali
— Self (archive footage)
Avery Brundage
— Self (archive footage)
Dave Zirin
— Sports journalist and commentator
Douglas Hartmann
— Self - Associate Professor, University of Minnesota
Ken Noel
— Self - Chief Organizer, Olympic Project for Human Rights
Ralph Boston
— Self - Long Jump; Olympic Gold 1960, Silver 1964, Bronze 1968
Bob Beamon
— Self - Long Jump; Olympic Gold 1968
Kwame Ture
— Self (archive footage)
H. Rap Brown
— Self (archive footage)
Ben Carrington
— Self - Assistant Professor, University of Texas at Austin
Paul Hoffman
— Self - US Olympic Rowing Team 1968; Olympic Silver 1972
John Carlos
— Self (archive footage)
Peter Norman
— Self (archive footage)
Gary Younge
— Self - Guardian Columnist
Jesse Owens
— Self (archive footage)