People

Lee Harvey Oswald had a long history of past acts of violence.

Lee Harvey Oswald owned the gun used to kill JFK and worked in the building he assassinated him from.

A suspicious person appeared during the time when JFK was shot. He was seen in the Zapruder film with a black umbrella. Because he was the only person with an umbrella on a sunny day, near the road when JFK was shot, he could very well have been involved with the assassination plan.

The CIA disagreed with Kennedy's politics prior to his assassination.

Famous Chicago mobster Sam Giancana had a long and complex history with the Kennedy family.

Oswald's political beliefs led him to defect to the Soviet Union.

The U.S. government concluded that Lee Harvey Oswald assassinated John F. Kennedy.

The U.S. government excluded information from the Warren Commission report.

JFK's brother, Robert Kennedy, had a major influence over organized crime.

Jack Ruby murdered Lee Harvey Oswald, proving that he was working as part of a larger organization.

Lyndon B. Johnson wasn't happy in his position as vice president.

Lee Harvey Oswald could have been operating as a KGB agent for Russia.