In "To Kill a Mockingbird", how are Atticus and Calpurina examples of justice in the household?
Atticus and Calpurnia are the "parents" in the lives of Jem and Scout. Of course, Atticus is their true father, while Cal is just the maid/nanny at their house. She truly does play the role of a mother in their lives.
In the link it states that "Atticus and Calpurnia...show understanding and sympathy towards those who might be different or less fortunate." Both stick up for those who are not strong enough to help themselves. Atticus explains why he's defending Tom Robinson. He even defends courage (in chapter 11) as "when you know you're licked before you begin but you begin anyway and you see it through no matter what." That was how Atticus was an example of justice in his household.
Calpurnia stuck up for young Walter Cunningham when he came over for lunch one day. Scout was making fun of how he poured molasses all over his lunch. Cal was furious with her and taught her that no matter how Scout labeled him ("He's just a Cunningham, Cal") he was her company. That was how she was an example of justice in their house.