Some who are discriminated against are those who are born differently than the majority. One person that is treated unfairly is Calpurnia, as you can see when Aunt Alexandra tried to get Atticus to fire Calpurnia, because in her eyes, Calpurnia wasn't a good enough female role model (p.136). This is a prejudice action, because Calpurnia is as good as a role model as Aunt Alexandra, if not better. Calpurnia despite all the comments and prejudice against her carries on with life, whilst Aunt Alexandra has all the trappings of a white woman who thinks her position in life is preordained and everybody should know their place. If they do not then they are abnormal and should be subject to anger, which I would see as oppression and prejudice. Maybe Aunt Alexander was afraid that her view of blacks was wrong and that they were human beings after all and that was a frightening thought in the South.
Another person who is treated like an inferior is Scout. She is treated badly by her teacher, because she knew how to read. "She discovered that I was literate and looked at me with more than faint distaste. (p.17)." Scout is treated like it is her fault that she knows more than the average child did. She learned earlier than others so she gets punished unjustly. This is another example of people stereotyping people and the danger of the stereotype. Children cannot do certain things