sentence: Many theorists suggest that Oswald conspired with others to kill the president.
sentences_after: These include enemies like the KGB, the Mafia or Fidel Castro. Some even think it may have been the CIA or Vice President Lyndon B. Johnson.
concept_name: theorist
headings: John F. Kennedy Investigation
categories: American murder victims Assassinated United States Presidents Burials at Arlington National Cemetery Deaths by firearm Irish-American politicians Kennedy family Presidents of the United States Pulitzer Prize winners United States representatives from Massachusetts United States senators from Massachusetts US Democratic Party politicians 1917 births 1963 deaths