The images are still vivid 25 years later. The young Palestinian Sirhan Sirhan, gun blazing, moving toward Robert F. Kennedy in Los Angeles' Ambassador Hotel on June 5, 1968. The Senator lying in a pool of blood on the floor of the crowded hotel pantry. His ex-officio bodyguards, Olympic hero Rafer Johnson and former football star Roosevelt Grier, grabbing Sirhan. Shock -- and then grief for another American hero senselessly dead before his time.
At the time there seemed little doubt that Sirhan, who detested Kennedy's pro-Israel stance, was guilty as sin. He was there; he fired at Bobby. But over...