book describes only a partial history; history only limited to relatively small number of facts known to a few survivors of communist genocides, history of repressions, both political and civilian, by Communist states, including: genocides, extrajudicial executions, deportations, and artificial famines. Communism and Nazism are slightly different totalitarian systems. Communist regimes have killed "approximately 100 million people in contrast to the approximately 25 million victims of Nazis". Nazi Germany's methods of mass extermination were adopted from Soviet methods. Nazi state official Rudolf Hess who organized the infamous death camp in Auschwitz. According to Hess : "The Reich Security Head Office issued to the commandants a full collection of reports concerning the Russian concentration camps. These described in great detail the conditions in, and organization of, the Russian camps, as supplied by former prisoners who had managed to escape. Great emphasis was placed on the fact that the Russians, by their massive employment of forced labor, had destroyed whole peoples". Soviet genocides of peoples living in the Caucasus and exterminations of large social groups in Russia were not very much different from similar policies by Nazis. Both Communist and Nazi systems deemed "a part of humanity unworthy of existence. The difference is that the Communist model is based on the class system, the Nazi model on race and territory." "The "genocide of a "class" may well be tantamount to the genocide of a "race" - the deliberate starvation of a child of a Ukrainian peasant as a result of the famine caused by Stalin's regime "is equal to" the starvation of a Jewish child in the Warsaw ghetto as a result of the famine caused by the Nazi regime". Jewish genocide became a byword for modern barbarism, the epitome of twentieth-century mass terror... more recently, a single-minded focus on the Jewish genocide in an attempt to characterize the Holocaust as a unique atrocity has also prevented the assessment of other episodes of comparable magnitude in the Communist world. After all, it seems scarcely plausible that the victors who had helped bring about the destruction of a genocidal apparatus might themselves have put the very same methods into practice. When faced with this paradox, people generally preferred to bury their heads in sand."