<P> Members of the crowd captured and subdued Czolgosz . Afterward, the 4th Brigade, National Guard Signal Corps, and police intervened, beating Czolgosz so severely it was initially thought he might not live to stand trial . On September 24, after a rushed, two - day trial in state court, Czolgosz was sentenced to death . He was executed by electric chair in Auburn Prison on October 29, 1901 . Czolgosz's actions were politically motivated, although it remains unclear what outcome if any he believed the shooting would yield . </P> <P> Following the assassination of President William McKinley, Congress directed the Secret Service to protect the President of the United States as part of its mandate . </P> <P> The assassination of President Kennedy took place on Friday, November 22, 1963, in Dallas, Texas, at 12: 30 p.m. CST (18: 30 UTC). Kennedy was fatally shot twice through his neck and his head by a sniper while riding with his wife Jacqueline in a presidential motorcade through Dealey Plaza . He was officially declared dead 30 minutes after the shooting at Parkland Memorial Hospital, but he was effectively brain dead instantly . Texas Governor John Connally, who was sitting in front of Kennedy, was also wounded in the shooting but survived . The assassination was filmed by Dallas dressmaker Abraham Zapruder . </P> <P> Lee Harvey Oswald, an employee of the Texas School Book Depository in Dealey Plaza, and a former U.S. Marine with Marxist beliefs, was arrested shortly after at the Texas Theater after agents found his rifle with shell casings on the sixth floor of the Depository . Oswald was originally arrested for killing Dallas Police officer J.D. Tippit after the assassination . At 11: 21 a.m. Sunday, November 24, 1963, while he was handcuffed to Detective Jim Leavelle and as he was about to be taken to the Dallas County Jail, Oswald was shot and fatally wounded in the basement of Dallas Police Headquarters by Jack Ruby, a Dallas nightclub operator who said that he had been distraught over the Kennedy assassination . The shooting by Ruby was televised, as Oswald's transfer was being covered by the media . Oswald was taken unconscious by ambulance to Parkland Memorial Hospital where he died at 1: 07 p.m.. Ruby was convicted of Oswald's murder and died in prison in 1967 . </P>

President of the united states all of them