First, let me explain the "positive message". This book is the one that convinced me the death penalty is wrong. I think that this message is incredibly important. I do not really have much more to add because the site review has pretty much got it right, but I think that it is OK for younger audiences as well. The third book gets bogged down in judicial proceedings that might confuse younger readers, but with the right explanations I'd say it's fit for anyone. I disagree that it is for older teens, because the sooner people learn about racism, the sooner they can stand against it. Teenagers who are 15, 14 ,13... they can suffer from racism, so why not have them read about it, and understand it.