Final answer:
W.E.B. Du Bois initially encouraged Black people to support America's war effort in World War I, but later became disillusioned and argued for fighting racism and discrimination within America.
Step-by-step explanation:
W.E.B. Du Bois, the editor of The Crisis, initially encouraged Black people to support America's war effort during World War I. He called on them to 'close ranks' and join the military. However, later on, Du Bois became disillusioned with the idea that defeating Germany would lead to freedom for people of African descent. He argued that if the war was truly for freedom, then the fight against racism and discrimination should happen within America as well.