I can understand DuBois grievances with Booker T. Washington. Washington speaks about how African American men needed to essentially focus on and make the best of manual labor jobs. He seemed to want the focus to be shifted from insisting on rights to establishing personal and familial wealth through quiet hard work. DuBois seemed to characterize this as submissive in nature. He advocated for more insistence on civil rights. He doesn't directly blame Washington for how the black community had integrated into society post slavery, but he does believe his teachings contributed.