Which sociologist noted a century ago that enslaved blacks were in an even more oppressive situation than other subordinate groups because, by law, they could not own property and they could not pass on the benefits of their labor to their children?

The answer is "W. E. B. DuBois".

William Edward Burghardt Du Boiswas was an American sociologist, humanist, history specialist, social liberties dissident, Pan-Africanist, writer, essayist and editorial manager. He was born in Great Barrington, Massachusetts, Du Bois experienced childhood in a generally tolerant and coordinated group.