希·庞德

CCH Pounder

饰：Herself - Narrator

Alan Goodman

饰：Himself - Anthropologist

Joseph Graves Jr.

饰：Himself - Biologist

James Horton

饰：Himself - Historian

Mae Ngai

饰：Herself - Historian

Pilar Ossorio

饰：Herself - Legal Scholar, Biologist

史蒂芬·杰伊·古尔德

Stephen Jay Gould

饰：Self - Paleontologist

Paul Finkelman

饰：Self - Historian

Ira Berlin

饰：Self - Historian

Eduardo Bonilla-Silva

饰：Self - Sociologist

Robin Kelley

饰：Self - Historian