Racism in To Kill a Mockingbird is learned through the characters' experiences and interactions with each other. The characters learn about racism through the town's social hierarchy, the court case of Tom Robinson, and the interactions between the white and black communities. Atticus Finch, the protagonist's father, is a strong advocate for racial equality and teaches his children to be tolerant and understanding of others. The children also learn about racism through the townspeople's reactions to Tom Robinson's trial and the prejudice they show towards the black community.