Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: the more IMPORTANT and EXPLAINING book about nazis'cruelty

I am an italian - JEW - doctor M.D.,I am born in 1932, Iescaped from nazis' persecution first hidden, after escaped inSwitzerland: I had a grandmother and two uncles died in Auschwitz and Mauthausen. I THINK as M.D. (and also psychanalist) systematically studying Nazism with a great interest - professional and personal and historical - THAT THIS NYISZLI'S BOOK IS THE MOST IMPORTANT AND EXPLAINING ABOUT THE ABSOLUTE PARTICULARITY OF NAZIS' QUALITY OF CRUELTY: NOTHING TO COMPARE WITH WHICHEVER OTHER SLAUGHTERS OF THE WHOLE HUMAN HISTORY. I was bewildered on reading another reviewer writing: "interesting but nothing new". I apologize but I don't agree at all.