Fifty-three years ago in early May, I stood with other news reporters on a hillside and watched federal agents walk cautiously toward Wounded Knee, the Pine Ridge Reservation village that had been the focal point for a 71-day armed standoff. The sun had only topped the eastern horizon when federal marshals and FBI agents began to move into the village. Dew in the just-greening grass shimmered as the federal force reached the edge of town. Report…