Nov. 22 will mark 50 years since the assassination of President John F. Kennedy. In that time, conspiracy theories concerning his death have persisted, but nothing has been proven.
On Thursday night, three prominent historians laid out their theories and the reasons for them at a forum inside the Mob Museum in downtown Las Vegas.
It's estimated that more than half of Americans believe there was a conspiracy to assassinate President Kennedy. When the Zapruder film was released to the public in 1975, it added fuel to the fire.
"It's appalling and disturbing that after all this time we still don't know for sure what happened," moderator and Southern Methodist University professor Tom Stone said.
The experts gathered on Thursday night have studied the assassination extensively. Investigative journalist Gerald Posner wrote the acclaimed book Case Closed around his theory.
"One man, one gun firing three shots that day. Lee Harvey Oswald killed the president, ended Camelot and is the lone assassin," he said.
Organized crime expert G. Robert Blakey claims the mob was behind the assassination.
Forensic historian Patrick Nolan just released a book, CIA Rogues and the Killing of the Kennedys, in which he concludes four rogue, high-level CIA operatives masterminded the assassination.
"There were three shooters who fired four shots. One was in the Texas School Book Depository, one was in the grassy knoll and one was on the Dal-Tex Building," Nolan said. "This is based on forensic evidence, eyewitness evidence, film evidence and the doctor's evidence."
All three panelists presented evidence supporting their theories.
"We've made, in this country, JFK into a board game of Who Killed Kennedy? It's the Kennedys. It's the mystique of the Kennedys. If this had been Gerald Ford or Jimmy Carter, I don't know if 50 years later there'd be the same fascination about it," Posner said.
Many of the key figures who were around in 1963 have died, meaning we may never definitively know who was behind Kennedy's assassination.
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