Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Smear and exploitation of Ayn Rand (read The Passion of Ayn Rand's Critics for the whole story)

This book is a smear job against Ayn Rand so that Nathaniel Branden can clean up his own tarnished reputation while cashing in on Ayn Rand's fame.James S. Valliant, in his book The Passion of Ayn Rand's Critics: The Case Against the Brandens, thoroughly dissects the claims made by the Brandens against Ayn Rand. He then references Ayn Rand's own personal journals to systematically demonstrate how Barbara and Nathaniel Branden deceived and exploited Ayn Rand for years for their own illegitimate aims. Even after Ayn Rand's death, the Brandens continue to cash in on Ayn Rand's self-made fame and her original philosophy of Objectivism.