Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: -

I have been doing research about multicultural picture books and had high expectations for this book because it seemed like it was going to be good. And it did start off pretty good...but then there are strange interjections about how Mexico is poor, and shows Mexican children dirty and shoeless and then American kids having fun as tourists with shoes on.Not to mention I think the authors misunderstood the term mariachi with a trio (big band with horns, strings, and singing) as opposed to the depicted "trio" they show. I would have thought the National Geographic society could at least do some fact checking.While the mixed media pictures were pretty, I think this book drops the ball.