I think what Lynn is saying is that when we identify with characters with different lives experiences, we see the world through different eyes and maybe that is what encourages us to act upon social justices issues in the real world. I don't think she is saying we put a book down and say to ourselves that's it, I'm going to protest our government, but that rather when we see stuff on the news that maybe we would not have thought about or cared about that maybe our perceptions change without us even knowing it and that at that point we might be more inclined to act. Does that make sense?