As someone who spent the majority of their life around "poor Whites" in "dead-end White trash flyover state communities" (what a wholesome description of White people) you're just wrong.
Rural racism is simply not acknowledging the existence of a nigger. Sure, a high schooler might yell at a slur as they drive by, but the actual daily racism I saw was just people ignoring non-whites and pretending they didn't exist. For example, nogs would stay out of certain "White bars" and such because they don't get served, or even looked at. It's felt in daily actions like not holding doors open for them, or a cashier being snippy with them at the register. The idea that rural towns have secret Klan meetings at night in the woods is an urbanite myth.