In To Kill a Mockingbird, what are some quotes that show racial discrimination?

"Scout," said Atticus, "nig-lover is just one of those terms that don't mean anything-like snot-nose. It's hard to explain-ignorant, trashy people use it when they think somebody's favoring Negroes over and above themselves. It's slipped into usage with some people like ourselves, when they want a common, ugly term to label somebody."

"You aren't really a nig-lover, then, are you?"

"I certainly am. I do my best to love everybody ... I'm hard put, sometimes-baby, it's never an insult to be called what somebody thinks is a bad name. It just shows you how poor that person is, it doesn't hurt you." Chapter 11 pages 107-109