The footage of the "JBU terrorist attack" was actually news reel footage from when a B-25 bomber accidentally crashed into the Empire State Building.
The "viewer discretion advised" title card was suggested by a woman in the film's test audience.
The "paddy rollers" mentioned several times, including the theme song from the Cops (1989) parody, is slang for the vigilante slave patrols that hunted down escaped slaves before the Civil War, and were a model for the Ku Klux Klan.
The reason San Francisco was chosen as the place the audience watches the "documentary" was because the filmmakers wanted the irony of portraying a traditionally ultra-liberal city in the ultra-conservative Confederacy.
Aunt Jemima, cited during the epilogue as a brand name rooted in slavery, would not be discontinued until 2020.