The “motivation” in Wrong Turn was a combination of the inbreds being cannibals, and their apparent thrill at hunting humans. Noting the huge “junkyard” of cars and piles and collections of personal effects, the inbreds went after anyone who drove near their home.
I recall a Wes Craven movie from the early nineties called “The People Under the Stairs” where the villains were an incestuous brother/sister team. They were religious, but had yuppie vibe.
Preppie, not yuppie. Yuppies are petit-bourgeois upstarts.
Jack and Jackie showed them that they could out-WASP the WASPs.
Would the Stepford Wives count?
Different kind of story entirely.
Then Hannibal couldn’t be WASP because he wasn’t Anglo-Saxon. I think Hannibal (the novel if not the movie) established him as of East European (if not Russian) extraction.
In Hannibal, it’s stated that Lector’s mother was Italian* nobility, and that his father was a Lithuanian count (IIRC, title dating from the 12th century).
So cultured, yes; WASP, no.
*I toldja them guys always carry knives!
I haven’t finished the screenplay yet…
I KEED! I KEED!
But I did actually read the damn thing. Whew!