WASHINGTON, Aug. 3 (UPI) -- John Kerry's bid to become commander in chief of wartime America has opened old wounds among some former Vietnam-era POWs who bristle over Kerry's anti-war activism and atrocity allegations during the Vietnam conflict. Those activities and statements, pushed out of sight by a campaign that spotlights Kerry's service in Vietnam, were used by the POWs' North Vietnamese captors to sap the morale of prisoners and U.S. troops still in the field in South Vietnam, former POWs told United Press International. "They were always talking about that (anti-war demonstrations), and they picked right up on Kerry's...