Is Aunt Alexandra Racist?

Aunt Alexandra is a product of her time. Her views on the structure of society ran deep, and yes, she would be considered a racist.

Aunt Alexandra on Calpurnia, correcting Atticus for speaking freely in front of her....

“I don’t think it’s a good habit, Atticus. It encourages them. You know how they talk among themselves. Every thing that happens in this town’s out to the Quarters before sundown.”

Aunt Alexandra encouraging (well, forbidding) the children to keep company with those not deemed fit (they don't come from the right social strata)

“Don’t be silly, Jean Louise,” said Aunt Alexandra. “The thing is, you can scrub Walter Cunningham till he shines, you can put him in shoes and a new suit, but he’ll never be like Jem. Besides, there’s a drinking streak in that family a mile wide. Finch women aren’t interested in that sort of people.”

She took off her glasses and stared at me. “I’ll tell you why,” she said. “Because— he—is—trash, that’s why you can’t play with him. I’ll not have you around him, picking up his habits and learning Lord-knows-what. You’re enough of a problem to your father as it is.”