When Francis talks to Scout, he reveals an unpleasant feature of Aunt Alexandra. What is it?

Francis reveals Aunt Alexandra's low opinion of the way her brother is raising his children, as well as his grandmother's racism.

“If Uncle Atticus lets you run around with stray dogs, that’s his own business, like Grandma says, so it ain’t your fault. I guess it ain’t your fault if Uncle Atticus is a nigger-lover besides, but I’m here to tell you it certainly does mortify the rest of the family—”
“Francis, what the hell do you mean?”
“Just what I said. Grandma says it’s bad enough he lets you all run wild, but now he’s turned out a nigger-lover we’ll never be able to walk the streets of Maycomb agin. He’s ruinin‘ the family, that’s what he’s doin’.”