W.E.B. Du Bois' statement that Black people do not expect social change to come at "the blast of a trumpet" suggests that he believed significant societal transformation, particularly regarding racial equality and justice, would not happen suddenly or dramatically. Instead, it implies that meaningful progress requires sustained effort, activism, and often a long-term struggle rather than relying on sudden or miraculous events.
The phrase can also indicate a disillusionment with the idea that political declarations or formal announcements alone can bring about real change. Du Bois often emphasized the need for persistent advocacy, education, and social action to challenge systemic racism and to achieve rights and recognition for Black people. Thus, he was likely stressing the importance of realistic expectations and an understanding that social change is a gradual process built on the ongoing work of individuals and communities.