The story tells about the social evil of slavery, seen through the eyes of an innocent child.

VOA: special.2010.03.21

They're offering a critique of the social order, and they even have the audacity to talk about good and evil.

他们批判社会秩序,能够厚颜无耻地评论是非善恶

耶鲁公开课 - 美国内战与重建课程节选