A push down a slide. Cutting in line. A little girl sees bullying and injustice around her school. She finally says, "Enough is enough!" She may be small, but she knows that her voice can make a difference. (I may or not cry every time I read this to my kids.)
Sally McCabe is a very little girl, and nobody notices her, although she notices everything that goes on around her--but when she speaks out about the unkindness she sees, people start to pay attention.