we want to talk right down to earth in a language that everybody here can easily understand

YouTube: Mos Def Reads Malcolm X's Message to the Grassroots as a part of Voices of a People's History of the United States. If you go to "when in the course of human events..." you can find a link to an old Grenada post on the same speech (which points to a page with Malcolm X's actual audio) under the title for the fourth of july.