The racist townspeople are shocked and unhappy to see that the new man in charge is a black man. Later a townswoman privately tells the sheriff that although she's impressed with the great job he's done please don't tell anyone she said that because after all she certainly doesn't want to be known as a n***** -lover.
I was reminded of that movie when I read about the controversy surrounding new Principal Zeke Ohan of Hancock Middle and High School in Michigan's UP (Upper Peninsula). Mr. Ohan is Black. The town and the UP are overwhelmingly white. Often times some whites don't think anyone is racist unless they're wearing Nazi flag underwear and screaming racial slurs at the top of their voice anytime they see a Black person. And even then there will be quite a few people who say that the person doing that is misunderstood or just having a bad day.
I think racism is more nuanced than that. I have met many whites who have no major problem with Black people, provided they are in a superior work position to the Black person. When a Black person, especially a Black man, makes more money than they do, is in a higher position than they are or has the ability and the drive to tell them what to do and make them do it, a different side of their personality emerges. I think that's what happened at Hancock.