To Kill A Mockingbird Prejudice has caused the pain and suffering of others for many centuries. Some examples of this include the Holocaust and slavery in the United States. In to Kill a Mockingbird, by Harper Lee racism was the cause of much agony to the blacks of a segregated South. Along with blacks, other groups of people are judged unfairly just because of their difference from others. The prejudice and bigotry of society causes the victimization of people with differences. 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 Calpurni