A) Scout get fights with them because of his father defending a black men, but his father is a white men. Francis always called Atticus a niger-lover which was really insulting. It suggest that Maycomb is a community that discriminates black. Scout's responses shows that she agrees with her father to protect the innocent.
Q)What connection might there be between what is required of Atticus to shoot the mad dog and what is required of him to defend Tom Robinson?
A)Atticus might need to sacrifice some of his dignity to shoot the mad dog and defend Tom Robinson as by defending Tom, other people will see him as a Negro-lover.