How does James H. Cone use imagery in Martin & Malcolm & America: A Dream or a Nightmare?

Imagery:

"The white man has taught us to shout and sing and pray until we die, to wait until death, for some dreamy heaven-in-the-hereafter, when we're dead, while this white man has his milk and honey in the streets paved with golden dollars here on this earth!"

"We didn't land on Plymouth Rock, the rock landed on us."