Corrected entry: In the scene between Gene Hackman and the sheriff in the barber shop, they are talking about baseball, Hackman says that he always liked baseball because "it was the only time a black man can wave a stick at a white man and not start a riot." The movie is set in 1946, but the first black player (Jackie Robinson) didn't start until 1947.
Corrected entry: Gene Hackman and Willem Defoe visits the house of Deputy Pell twice. After the first visit Gene tells Willem about the wedding photo (where some of the invitees show the Ku Klux Klan sign with their fingers). However, Gene has not seen the photo at this time. He does not see the photo until the second time he comes back to talk to Mrs. Pell.