The movie wasn’t political. The OP is trying to make it political.
It’s a silly premise.
The movie WAS political. It was about the laws that were active in the State of Mississippi at the time. Awful laws. Segragation laws, apparently based on hatred of the black-skinned person. The government was the lead dog on this, and the sheeply Democrats (and I presume others), were the actors on the stage. A stage play of hatred, and treating others as you would NOT treat a white person.
It was a ghastly film, about a horrid time in our history. I saw it last night, and wanted to walk out. Very painful.