Robert Gro­den lec­tures and sells print­ed and dig­i­tal mate­r­i­al about the Kennedy assas­si­na­tion in Dealey Plaza on week­ends. Mark Gra­ham The city of Dal­las got poured out of court again yes­ter­day in its decades long extra-legal per­se­cu­tion of Kennedy assas­si­na­tion expert Robert Gro­den, mak­ing the 82nd time the city has