Structurally, the tone scout uses towards black citizens creates sort of a vision of what black men and women would look like in this time. Scout is speaking for all black men and women when she is saying this, since scout doesn’t know the truth behind all black citizens she can not say this, because she is not standing in these men and womens shoes which makes her sound just flat out ignorant.
Stylistically, The repetition of the word “typical” helps follow through on the theme of ignorance. Since scout doesn’t live with the black people like Dolphus, she doesn’t know the way they “typically” act. The repetition of the word “typical” makes the reader think that she knows something more than normal white citizen of maycomb, but she doesn’t,