He recognized class struggle, gender relations, family relations, work and occupational force, crime, economics, even power. As an African-American man, he understood why he was being suppressed. But, to this day, we still study all of the above social forces and turn to empirical evidence to prove our theories. W.E.B Du Bois claimed it was his duty to put the science in sociology. I believe he achieved his goal, considering there is still science in sociology to this day. The fact that he was written out just proves his findings further.