William Edward Burghardt Du Bois February 23, 1868 – August 27, 1963) was an American sociologist, socialist, historian and Pan-Africanist civil rights activist. Born in Great Barrington, Massachusetts, Du Bois grew up in a relatively tolerant and integrated community, and after completing graduate work at the University of Berlin and Harvard, where he was the first African American to earn a doctorate, he became a professor of history, sociology and economics at Atlanta University. Du Bois was one of the founders of the National Association for the Advancement of Colored People (NAACP) in 1909.

https://en.wikipedia.org/wiki/W._E._B._Du_Bois