I think you get your opinions of rural Americans from fiction, because I've lived among rural people most of my life and met only one or two people who think that way, about the same frequency as people in cities. Art imitates life when that doesn't get in the way of emotional drama.

I think the number of rural Americans who truly and earnestly wish death upon Black Americans is an absolutely tiny minority compared to the amount of rural Russians who support the invasion of Ukraine.

I don't think your comparison really says anything interesting, apart from your bias against rural Americans.