Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A memorable and heart-wrenching book

I'm twelve years old and have never read a book as heart-wrencing as this one. Haing Ngor suffered the atrocities of the Khmer Rouge regime. He was tortured three times. Then the Vietnamese came and "liberated"Cambodia, at which point Haing fled to Thailand. From there he came to the United States, where he starred in "The Killing Fields". The suffering of Haing Ngor is something I still can't imagine happening to me. There were times in this book where I burst in to tears. I am deeply saddened by Haing's senseless murder. This was an amazing book, though I wouldn't recomend it to most people my age.