That's Not Fair! by Danielle McLaughlin
This book is halfway between a picture book and a non-fiction. Each section addresses a basic right, using a story to explore what it means to have, say, freedom of the press. Each story starts with a proposed law which, in the context of the current discussion, makes sense but somehow infringes on the citizen's rights. The stories serve as a starting point for discussion. This would be a great book to use is a classroom setting to supplement a more traditional text.