Conspiracy to assassinate President John F. Kennedy
The assassination of John F. Kennedy on November 22, 1963, and the subsequent murder of prime suspect Lee Harvey Oswald by night club owner Jack Ruby have spurred numerous conspiracy theories.
These include alleged involvement of the CIA, the Mafia, Vice President Lyndon B. Johnson, Cuban Prime Minister Fidel Castro, the KGB, or some combination of these entities. The original FBI investigation and Warren Commission report, as well as an alleged "benign CIA cover-up", have led to the claim that the federal government deliberately covered up crucial information in the aftermath of the assassination.
Former Los Angeles District Attorney Vincent Bugliosi estimated that a total of 42 groups, 82 assassins, and 214 people had been accused at one time or another in various conspiracy scenarios.
In 1964, the Warren Commission concluded that Oswald was the only person responsible for assassinating Kennedy. In 1979, the United States House Select Committee on Assassinations (HSCA) concluded that Kennedy was probably assassinated as a result of a conspiracy. The HSCA concluded that a second gunman besides Oswald probably also fired at Kennedy, based on acoustic evidence that was later discredited.[clarification needed]
In 1998, the JFK Assassination Records Review Board (ARRB) unearthed inconsistencies in the prior investigations, and the Board's chief analyst for military records contended that the brain photographs in the Kennedy records were probably not of Kennedy's brain.