Patty Hearst and Emily Harris waited on a grimy Los Angeles street, fighting their emotions as they listened to a radio rebroadcasting the sounds of their friends dying. On a nearby corner Bill Harris dickered over the price of a battered old car. Only blocks away, rifle cartridges were exploding in the dying flames of a charred bungalow. The ashes were still too hot to retrieve the bodies of the six S.L.A. members who had died hours before on the afternoon of May 17th, 1974.