W.E.B. Du Bois' classic 1903 work, "The Souls of Black Folk," opens with "The problem of the Twentieth Century is the problem of the color line." Du Bois helped form the NAACP, the National ...
https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!1012526~!0#focus ...