where Hopper elaborates upon what you're suggesting.
From
http://www.godamongdirectors.com/scripts/trueromance.shtml :
"CLIFF: Could I have one of those Chesterfields now?
COCCOTTI: Sure. Coccotti leans over and hands him a smoke.
CLIFF: Got a match? Cliff reaches into his pocket and pulls out a lighter.
CLIFF: Oh, don't bother. I got one. (he lights the cigarette) So you're a Sicilian, huh?
COCCOTTI: (intensly) Uh-huh.
CLIFF: You know I read a lot. Especially things that have to do with history. I find that shit fascinating. In fact, I don't know if you know this or not, Sicilians were spawned by niggers.
All the men stop what they were doing and look at Cliff, except for Tooth-pic Vic who doesn't speak English and so isn't insulted. Coccotti can't believe what he's hearing.
COCCOTTI: Come again?
CLIFF: It's a fact. Sicilians have nigger blood pumpin' through their hearts. If you don't believe me, look it up. You see, hundreds and hundreds of years ago the Moors conquered Sicily. And Moors are niggers. Way back then, Sicilians were like the wops in northern Italy. Blond hair, blue eyes. But, once the Moors moved in there, they changed the whole country. They did so much fuckin' with the Sicilian women, they changed the blood-line for ever, from blond hair and blue eyes to black hair and dark skin. I find it absolutely amazing to think that to this day, hundreds of years later, Sicilians still carry that nigger gene. I'm just quotin' history. It's a fact. It's written. Your ancestors were niggers. Your great, great, great, great, great-grandmother was fucked by a nigger, and had a half-nigger kid. That is a fact. Now tell me, am I lyin'?
Coccotti looks at him for a moment then jumps up, whips out an automatic, grabs hold of Cliff's hair, puts the barrel to his temple, and pumps three bullets through Cliff's head.
He pushes the body violently aside. Coccotti pauses. Unable to express his feelings and frustrated by the blood in his hands, he simply drops his weapon, and turns to his men.
COCCOTTI: I haven't killed anybody since 1974. ..."