FBI Agents who knew a great deal about JFK's assassination/coup, and were scheduled to testify before the House Select Committee on Assassinations in 1977:
William Sullivan, third in command at FBI, died in "hunting accident"
Louis Nicholas, special assistant to J. Edgar Hoover and Hoover's liaison with the Warren Commission;
Alan H. Belmont, special assistant to Hoover;
James Cadigan, document expert with access to documents that related to death of John F. Kennedy;
J. M. English, former head of FBI Forensic Sciences Laboratory where Oswald's rifle and pistol were tested;
Donald Kaylor, FBI fingerprint chemist who examined prints found at the assassination scene.
Hale Boggs, Warren Commission member who did not agree with the findings, died in small plane "crash"
John Lennon who, as his son Sean said in New Yorker magazine, was a “counter-cultural revolutionary” who the American government could not ignore. He said: “He was dangerous to the government. If he had said, ‘Bomb the White House tomorrow’, there would have been 10,000 people who would have done it. These pacifist revolutionaries are historically killed by the government. Anybody who thinks that Mark Chapman (who shot Lennon outside his New York apartment in 1980) was just some crazy guy who killed my dad for his personal interests, is insane. Or very naive. Or hasn’t thought about it clearly. It was in the best interests of the United States to have my dad killed. Definitely. And, you know, that worked against them because, once he died, his powers grew . . . They didn’t get what they wanted.”
Bob Marley, definite political assassination (by "cancer") who survived one previous assassination attempt when gunmen invaded his home and shot everyone