When Mahatma Gandhi died in 1948 by an assassin's bullet, the most potent legacy he left to the world was the technique of satyagraha (literally, holding on to the Truth). His "experiments with Truth" were far from complete at the time of his death, but he had developed a new technique for effecting social and political change through the constructive conduct of conflict: Gandhian satyagraha had become eminently more than "passive resistance" or "civil...