The theme of miscegenation also runs through the film. Early on, Martin earns a sour look from Ethan when he admits to being one-eighth Cherokee. Ethan says repeatedly that he will kill his niece rather than have her live "with a buck", that "living with the Comanche ain't living". Even one of the film's gentler characters, Vera Miles's Laurie, tells Martin when he explains he must protect his adoptive sister, "Ethan will put a bullet in her brain. I tell you Martha would want him to." This outburst makes it clear that even the supposedly gentler characters hold the same fear of miscegenation.