What kinda people kill each other most Family people. Brothers.

At a very tense moment during Scene Four, Lee dares Austin to call the police to remove Lee from the house after Lee refuses to return Austin's car keys. Austin, however, has not even considered such a rash action because he could never do such a thing to his brother. This familial relation, however, means very little to Lee. Indeed, in his view, the fact that they are family makes them even more prone to violence. In the world of the play, it is simply inevitable that the brothers will duke it out to the death, just as it is inevitable that the desert will exert its indomitable pull. There is no avoiding your fate in True West. The clash of the brothers is an event that has to happen. Lee understands his fate when he utters this line, and soon enough, Austin comes to understand his fate also.