Deliberate mistake: The eyewitness testimony that placed Oswald in the lunchroom at the book despository didn't come to light until the House Select Committee on Assassination in 1978, many years after the Shaw trial.
JFK (1991)
1 deliberate mistake - chronological order
Directed by: Oliver Stone
Starring: Gary Oldman, Tommy Lee Jones, Kevin Costner, Kevin Bacon, Vincent D'Onofrio, John Candy, Walter Matthau, Jack Lemmon, Sissy Spacek, Joe Pesci, Sally Kirkland, Anthony Ramirez, Ray LePere, Steve Reed
Factual error: In the aerial shot where they are driving over the Lake Pontchartrain Bridge two spans are depicted. In 1963 there was only one span. I know this to be true because I lived in New Orleans/Mandeville at the time. Anybody in NOLA could verify this.
Jim Garrison: White is black, and black is white.
Question: Was the head movement argument to the jury verbatim from the transcript of the actual trial of Clay Shaw?
Answer: No. The argument which mentions was the first closing argument by an assistant to Garrison and in it he mentions "back and to the left" once but not the multiple statements shown in the movie. The actual transcripts are available on line.