Justice in a picture book

Given "justice" as an Artisan value or for anyone interested in children's rights, I just read a picture book based on a true story, The Carpet Boy's Gift by Pegi Deitz Shea (Tilbury House, Gardiner Maine, 2003) about the carpet children in Pakistan. It indirectly (and directly in the post script) tells the story of a boy working with the Bonded Labour Liberation Front to free these children in Pakistan. The story is set in the 1990's. The boy (not the main character of the story) was shot in Pakistan for his work. Very sad but the story is told in a way that focuses on the work he did to free others and what he was freeing them from, not on his death. It's probably best for K/1st and up.