 Colin SalmonNarrator (voice) | Narrator (voice) |
| EEdwin MosesSelf - 400m Hurdles; Olympic Gold 1976, 1984 | Self - 400m Hurdles; Olympic Gold 1976, 1984 |
 Kwame Kwei-ArmahSelf | Self |
 Delroy LindoSelf | Self |
| SSteven MillnerSelf - Professor, San Jose State University | Self - Professor, San Jose State University |
 Harry EdwardsSelf - Professor Emeritus, UC Berkeley | Self - Professor Emeritus, UC Berkeley |
| LLee EvansSelf - 400m, 4 × 400m Relay; Olympic Gold 1968 | Self - 400m, 4 × 400m Relay; Olympic Gold 1968 |
 Tommie SmithSelf - 200m; Olympic Gold 1968 | Self - 200m; Olympic Gold 1968 |
| AArt SimburgSelf - Former San Jose State student | Self - Former San Jose State student |
| LLynda HueySelf - Former San Jose State sprinter and student | Self - Former San Jose State sprinter and student |
 Malcolm XSelf (archive footage) | Self (archive footage) |
 Muhammad AliSelf (archive footage) | Self (archive footage) |
| AAvery BrundageSelf (archive footage) | Self (archive footage) |
| DDave ZirinSports journalist and commentator | Sports journalist and commentator |
| DDouglas HartmannSelf - Associate Professor, University of Minnesota | Self - Associate Professor, University of Minnesota |
| KKen NoelSelf - Chief Organizer, Olympic Project for Human Rights | Self - Chief Organizer, Olympic Project for Human Rights |
| RRalph BostonSelf - Long Jump; Olympic Gold 1960, Silver 1964, Bronze 1968 | Self - Long Jump; Olympic Gold 1960, Silver 1964, Bronze 1968 |
| BBob BeamonSelf - Long Jump; Olympic Gold 1968 | Self - Long Jump; Olympic Gold 1968 |
 Kwame TureSelf (archive footage) | Self (archive footage) |
 H. Rap BrownSelf (archive footage) | Self (archive footage) |
| BBen CarringtonSelf - Assistant Professor, University of Texas at Austin | Self - Assistant Professor, University of Texas at Austin |
| PPaul HoffmanSelf - US Olympic Rowing Team 1968; Olympic Silver 1972 | Self - US Olympic Rowing Team 1968; Olympic Silver 1972 |
 John CarlosSelf (archive footage) | Self (archive footage) |
| PPeter NormanSelf (archive footage) | Self (archive footage) |
 Gary YoungeSelf - Guardian Columnist | Self - Guardian Columnist |
 Jesse OwensSelf (archive footage) | Self (archive footage) |