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In Why We Can't Wait by Martin Luther King, King has this extraordinary passage:
"More than 25 years ago, on of the southern states adopted a new method of capital punishment. Poison gas supplanted the gallows. In its earliest stages a microphone was placed inside the sealed death chamber so that scientific observers might hear the words of the dying prisoner to judge how the victim reacted in this novel situation. The first victim was a young Negro. As the pellet dropped into the container, and the gas curled upward, through the microphone came these words. "Save me Joe Louis. Save me Joe Louis. Save me Joe Louis."
(courtesy of http://www.edgeofsports.com/ )