Christ is a Nigger,
Beaten and black--
O, bare your back.
Mary is His Mother
Mammy of the South,
Silence your Mouth.
God's His Father--
White Master above
Grant us your love.
Most holy bastard
Of the bleeding mouth:
Nigger Christ
On the cross of the South.
The South has metaphorically crucified African-Americans over and over again, and the historical practice of  lynching  in many cases approximated a literal crucifixion.  Also intended, no doubt, is a reference to the  Ku Klux Klan  and their notorious symbolic practice of burning crosses. 

Christ in Alabama