Federal Judge John Roll was killed in Tucson trying to save another man’s life. As soon as madman Jared Lee Loughner finished his attempt to murder Congresswoman Gabrielle Giffords, he turned his gun on the people to his left, then the people to his right. Recently released video shows his first target to the right was Ron Barber, Gifford’s district director, who was standing next to Justice John Roll. Barber was shot in the arm. Judge Roll then pushed him down and, shielding Barber with his own body, steered him to shelter under a nearby table. While under the table,...