"That which the German power represents today spells death to the aspirations of Negroes and all darker races for equality, freedom and democracy. Let us not hesitate. Let us, while this war lasts, forget our special grievances and close our ranks shoulder to shoulder with our own white fellow citizens and the allied nations that are fighting for democracy. " W.E.B. DuBois This quotation reflects which attitude of many African Americans during World War I?