color line

is the relations between lighter and darker races which, du bois believed, would become 'the problem of the 20th century'.

the color-line concerned «the relation of the darker to thelighter races of men in Asia and Africa, in America and the islands of the sea». . . . Frederick Douglass wrote an essay by this title in 1881. It because popular after Du Bois' use in The Soulds of Black Folk also internal . . . The problem of the 20th century», wrote the great African-American thinker W. E. B. Du Bois peering into the future just as the century began, «is the problem of the color-line.»

color line, n.All

color line