"When Pope Pius XII died, LIFE magazine carried a picture of ..." — Malcolm X quote meaning

When Pope Pius XII died, LIFE magazine carried a picture of him in his private study kneeling before a black Christ. What was the source of their information? All white people who have studied history and geography know that Christ was a black man. Only the poor, brainwashed American Negro has been made to believe that Christ was white, to maneuver him into worshiping the white man. After becoming a Muslim in prison, I read almost everything I could put my hands on in the prison library. I began to think back on everything I had read and especially with the histories, I realized that nearly all of them read by the general public have been made into white histories. I found out that the history-whitening process either had left out great things that black men had done, or some of the great black men had gotten whitened.