On Aug. 28, 1963, my wife Susan and I were standing on the Mall, between the Lincoln Memorial and the Washington Monument in Washington, D.C. It was sweltering; the heat oppressive. But the gentle sway of 250,000 people, spread out on both sides of the reflecting pool as far as the eye could see, gave a sense of calm. Susan and I made our way to the speakers' platform by the Lincoln Memorial and found some shade among those holding CIO and AF of L signs. We waited for the speakers.The crowd was amazing. We had never seen so many …