Why does atticus finch teach empathy?

Atticus Finch teaches empathy to the kids by representing and defending Tom Robinson. He also make Jem read to Mrs. Dubose. This teaches the kid to care for others and that the world sometimes isn't fair. Also, Atticus Finch hits everyone with the realization that their social norms are wrong. In Tom Robinson's case, he clearly demonstrates Robinson's innocence. However, only because he is black, the jury says he is guilty. He spent a whole night guarding Robinson's cell  so that no one would attack him. Overall, Atticus Finch demonstrates empathy, and by doing so he teaches everyone else.