If there is to be reconciliation, first there must be truth.
The self-congratulatory popular account insists that Dr. King called on the nation to fully accept its own creed, and the walls came a-tumbling down. This conventional narrative is soothing, moving, and politically acceptable, and has only the disadvantage of bearing no resemblance to what actually happened.
The Lord works through deeply flawed people, since He made so few of the other kind.
