When Calpurnia, the Finch's family cook, takes Jem and Scout to church, they are welcomed and friendly greeted by all of the members except one. When Lula, a black woman who is only presented once in the novel, sees the kids, she angrily tells Calpurnia that she has no business taking white children to their church. That they had their own. Lula’s anger could be justified with the fact that the back community had always been ostracized in Maycomb, they had been discriminated and hated. So they created their own church, and that chuch had become a sort of sanctuary where they could all gather without being singled out. By taking white children, Calpurnia had invaded a space that they had struggle to create in a white realm in which African-Americans were disctiminated against. Lula appears to be the only character that seems like she hasn’t resigned to being segregated.