The first book is based off of the 60s song "Blowin' In The Wind" by Bob Dylan, illustrated by Jon J. Muth. The book is based around the civil rights movement and has interesting lyrics such as "Yes, ’n’ how many times must the cannonballs fly / Before they’re forever banned?”. It covers a very important topic that many children read about yet gives them a new perspective on it. I definitely don't think a very young child would be able to understand the material so I think this would be best for a middle school aged child. Although the text is not difficult, the abstract ideas from it would be hard to grasp at a young age.
Another book that they mentioned in the article that I found interesting was "Which side are you on?" which covers the topic of unions. The story is about a young wife whose husband is receiving death treats from people in his town because he is trying to organize a union for the coal mine that he works at. This would be a very relevant topic for children of elementary school to learn about, especially in Michigan. Many parents are Union workers for the Auto industry and other skill trades that are prevalent in MI. This book shows a different side of the Union "world" that many don't see or neglect to see.I think these books will be very important to introduce young children to new topics. Why not start your children young and teach them about societies issues? Maybe then they will become passionate about something enough to take a stand and make a change in the world.
http://www.nytimes.com/2011/10/26/books/review/protest-songs-for-young-dissenters.html?_r=1&scp=2&sq=Childrens%20Books&st=cse

