Delmar Dennis (a key witness against the murderer, 'Byron De La Beckwith') and his family can be seen as extras in the parade scene. At the film's end, a title card indicated that Bobby DeLaughter had run for a position as a judge and been defeated. That was true at the time. Subsequently, he was appointed to a judgeship and later elected overwhelmingly to that position.
There is a scene where The Partridge Family is playing on television. That episode is the entitled "A Man Called Snake". The man playing Snake in that episode is Rob Reiner
Make-up artist Matthew W. Mungle was called in at the last minute by his colleague Deborah La Mia Denaver to assist with James Woods's aging make-up, at the recommendation of Woods himself. The three of them had previously collaborated on "Citizen Cohn" and enjoyed the experience. This however left Mungle with only two days to sculpt and manufacture the complete make-up.
Sentenced to life imprisonment for the murder of Medgar Evers, Byron De La Beckwith died at the University of Mississippi Medical Center in 2001 in Jackson, Mississippi, having been transported there from Central Mississippi Correctional Center, aged 80. He had suffered from heart disease, high blood pressure and other ailments.
When Bobby DeLaughter and his new wife are in bed, she is reading "North Toward Home," a memoir by Jackson (Miss.) native Willie Morris, former editor of Harper's, who was an uncredited consultant on the movie and who later wrote about the making of the movie and its implications on Jackson.
When Bobby DeLaughter goes to the men's room where he has his confrontation with De La Beckwith, the men's room door has an old Jim Crow era sign "White Men" painted over but the lettering is still visible.
Byron Dela Beckwith was then residing in the county jail, not a half a mile from where they were filming the court room scenes. No one went to visit him, and he knew they were there.
Robert DeLaughter served a federal prison sentence after pleading guilty to an obstruction of justice charge on 30 July 2009. He was released on 13 April 2011.
In his speech heard at the beginning, President John F. Kennedy uses the word "delay" twice. "Delay" is the character's Byron De La Beckwith's nickname, used by his friends and acquaintances throughout the film.