Charles W. Mills (2005) "Kant's Untermenschen". In: Andrew Valls (ed.), Race and Racism in Modern Philosophy. Cornell University Press 169--93.

This audio recording was uploaded as part of the required reading for Module 0: Ending The World's Session 2: Who's Human? organized by Decoloniality London.

Full text can be found here: http://www.decolonialitylondon.org/decolonial-study-programme/module-0-ending-the-world/session-2-who-is-human/

More info: www.decolonialitylondon.org