"Bare footed Gen"

I came across "bare footed Gen(A japanese comic book)". This book had good reviews and was elected as a recommended book. Gen shows the situation of second world war very well and had critical view about japanese army and the japanese emperor. I would like to read this book more and more but it was banned for kids to read this book by japanese government and japanese far-rightists. Are you afraid that children know the truth of past affairs? This anime is little bit creepy but i can feel how much brutal japan and the world was.