Examples of Bob Ewell being racist in To Kill a Mockingbird?

Scout is looking at Bob Ewell during the trial. This scene is one of many places in the novel where the narrator makes it clear that Bob does not have any social standing or value in the Maycomb community, yet the inherent racism of the town privileges Bob over his black neighbors, even though many of them are better people than Bob. Bob's lack of personal integrity makes him easy to hate as a character, but is also crucial to one of the novel's arguments about racism. Even though Tom Robinson is objectively a better person than Bob Ewell, Bob can destroy Tom because of the inequities of race.

Every town the size of Maycomb had families like the Ewells. No economic fluctuations changed their status-people like the Ewells lived as guests of the county in prosperity as well as in the depths of a depression. No truant officers could keep their numerous offspring in school; no public health officer could free them