If you think that Oliver Stone invented the political paranoia movie, take a glance at Executive Action sometime. Based on Mark Lane's Rush to Judgment, the conspiracy theorist's bible, Executive Action perpetuates the popular urban legend that John F. Kennedy was assassinated at the behest of a right-wing cartel with military and industrial interests.
The film further hypothesizes that Lee Harvey Oswald not only didn't pull the trigger, but was also set up as a disposable dupe (this notion wasn't even new in 1973). Burt Lancaster, Robert Ryan and Will Geer play the sinister conspirators.
In the film's coda, still photos of 18 witnesses to the assassination are shown, while the accompanying text informs us that all of these people had died between 1963 and 1973. We are further told that the odds against this coincidence are one in a trillion.
When Oliver Stone's thematically similar JFK came out in 1991, viewers with long memories were quick to notice the eerie similarities between the Stone film and Executive Action -- right down to choice of camera angles. Hmmm....a conspiracy, perhaps?