 But this class-based sense of shame is both impediment and adjunct of any strategy based on race pride and solidarity, as well, since such shame and embarrassment can present an obstacle to any concerted political action, which demands racial unity in common cause, and under the leadership of the “talented tenth” of race aristocrats, to be successful. While calling for efforts to “to build up a racial ethos”, Du Bois thus warns against too extreme a version of such “propaganda for race pride”, counseling Blacks to avoid reproducing what he describes as a “superiority complex among the white and the yellow race”.