Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An Essential Book for Understanding the Holocaust

If I were given the impossible task of sellecting three essential books to help one understand the holocaust, "Ordinary Men: Reserve Police Battalian 101 and the Final Solution in Poland" would be on the list. If there is any doubt in ones mind that the holocaust did or could occur, or more importantly, be repeated, this book will dispell that doubt. No other book, among the scores I've read on this subject, explains the forces within a fascist state which can turn a civilization in upon itself. The reader will see and understand clearly that the average man can be compelled by the political forces around him to revert to savagery for savagery's sake. If the purpose of civilization is to elevate the human condition...here in these pages you will discover the antithesis of civilization. And you will begin to understand how it could have happened....and how it could happen again.