Crozier paints quite a dismal portrait of the collectivist powers that squashed all forms of dissent and pushed forward their grandiose vision for the world. This book lays out in plain view for the world to see-the anti-Communists were right. Marxists were fomenting revolution, terror, war, and all sorts of inhumane practices all through their lifespan and through their satellites and allies. Comrades and fellow travellers at home, similarly, were not the humanitarians they pride themselves on claiming to be (the right of the self-anointed, more like); instead, they were vicious thugs with no minds of their own, instead following orders barked at them by their leaders in Moscow, despite knowledge of Communism's crimes against humanity, peace, and culture; indeed, they turned their back on all this because it is the Marxist nature.
In that sense probably the best indication of this book's compelling style and content, which is backed by nigh-irrefutable evidence such as documents from the archives of Communist regimes, is that of the response it engenders from the far leftist crowd. You see, Marxism is in a most twisted sense the "intellectual" religion of modern times. People who surrender to it abandon all earthly rationality and participation in logical discourse. Instead, everything in life is placed into two categories: progressive and reactionary. "If you are not with us, you are against us." How odd, then, that these self-described nihilists should bemoan such a philosophy on the part of the free-marketers and the true democrats. This is why their best prepared and unified defense against this book is to point out that it is written by a right-winger, and that this somehow makes the book unobjective. One can only ask what they would say to a book that is similarly condemning of the Soviet system and all fellow travellers, yet written by leftists. In fact, this book (and others like it) is already written, and it is "The Black Book of Communism" (an equally, if not more so, recommended work on Communist reality).
So, in the end, anyone can go through the book and find points where they disagree with the conclusions that Crozier has drawn. Such is natural; human nature. But similarly they know that he has the facts on his side. The documentation. The statistics. The reason. This is what makes them hysterical, and it is only to their utter disgrace.