“Awesome as they are, therefore, numbers do not in themselves prescribe the singularity of the Holocaust. But they provide a clue. For the proportion of European Jews killed during the Second World War, with roughly one of every three civilian deaths in Europe being that of a Jew, was undoubtedly greater than that of any other people, because of the Nazis’ policy toward them. Unlike the case with any other group, and unlike the massacres before or since, every single one of the millions of targeted Jews was to be murdered. Eradication was to be total. In principle, no Jew was to escape. In this important respect, the Nazis’ assault upon Jewry differed from the campaigns against other peoples and groups; Gypsies, Jehovah’s Witnesses, homosexuals, Poles, Ukrainians, and so on. Assaults on these people could indeed be murderous; their victims number in the millions, and their ashes mingle with those of the Jews of Auschwitz and many other camps across Europe. But Nazi ideology did not require their total disappearance. In this respect, the fate of the Jews was unique.”
Though the circumstances of her final years (she died, at 15, in Bergen-Belsen) were so terrible and extreme, her inner life and her voice seem almost shockingly contemporary, astonishingly similar to the voices of the teenagers we know. We cannot help but be amazed that an adolescent girl could have written so movingly and intelligently about a subject that continues to overwhelm the adult imagination.
Over the decades that followed, ordinary Germans struggled with the Holocaust’s bitter legacy, as survivors and the families of victims sought restitution of wealth and property confiscated during the Nazi years. Beginning in 1953, the German government made payments to individual Jews and to the Jewish people as a way of acknowledging the German people’s responsibility for the crimes committed in their name.
Begin thought settling the score with Mengele would show Palestinian leaders (and the Israeli public) that they would have to pay a price for harming Israelis. His attitude was reflected in a message he sent to President Ronald Reagan when he sent the Israeli Army into Lebanon in 1982, saying that he felt as if “I have sent an army to Berlin to wipe out Hitler in the bunker.”
The mass killings of Jews in the occupied Soviet territories were assigned to four SS formations called Einsatzgruppen ("task groups"), which were under Heydrich's overall command. Similar formations had been used to a limited extent in Poland in 1939, but the ones operating in the Soviet territories were much larger.[242] The Einsatzgruppen's commanders were ordinary citizens: the great majority were professionals and most were intellectuals.[243] By the winter of 1941–1942, the four Einsatzgruppen and their helpers had killed almost 500,000 people.[244] The largest massacre of Jews by the mobile killing squads in the Soviet Union was at a ravine called Babi Yar outside Kiev,[245] where 33,771 Jews were killed in a single operation on 29–30 September 1941.[246][n] A mixture of SS and Security Police, assisted by Ukrainian police, carried out the killings.[248] Although they did not actively participate in the killings, men of the German 6th Army helped round up the Jews of Kiev and transport them to be shot.[249] By the end of the war, around two million are thought to have been victims of the Einsatzgruppen and their helpers in the local population and the German Army. Of those, about 1.3 million were Jews and up to a quarter of a million Roma.[250]
When she was 17, Amir took a class about the Holocaust. “How did you escape, Papa?” she remembers asking afterward. He agreed to explain, but what he recounted were mostly technical details: the size of the bunker, the number of bodies consumed by the flames. He explained that in addition to the five men who had fled with him to the Rudnitsky Woods, six other members of the Burning Brigade had survived the escape. The rest had perished.
One of the most horrific terms in history was used by Nazi Germany to designate human beings whose lives were unimportant, or those who should be killed outright: Lebensunwertes Leben, or "life unworthy of life". The phrase was applied to the mentally impaired and later to the "racially inferior," or "sexually deviant," as well as to "enemies of the state" both internal and external. From very early in the war, part of Nazi policy was to murder civilians en masse, especially targeting Jews. Later in the war, this policy grew into Hitler's "final solution", the complete extermination of the Jews. It began with Einsatzgruppen death squads in the East, which killed some 1,000,000 people in numerous massacres, and continued in concentration camps where prisoners were actively denied proper food and health care. It culminated in the construction of extermination camps -- government facilities whose entire purpose was the systematic murder and disposal of massive numbers of people. In 1945, as advancing Allied troops began discovering these camps, they found the results of these policies: hundreds of thousands of starving and sick prisoners locked in with thousands of dead bodies. They encountered evidence of gas chambers and high-volume crematoriums, as well as thousands of mass graves, documentation of awful medical experimentation, and much more. The Nazis killed more than 10 million people in this manner, including 6 million Jews. (This entry is Part 18 of a weekly 20-part retrospective of World War II)

In 1935, Mengele earned a PhD in anthropology from the University of Munich.[7] In January 1937, he joined the Institute for Hereditary Biology and Racial Hygiene in Frankfurt, where he worked for Dr. Otmar Freiherr von Verschuer, a German geneticist with a particular interest in researching twins.[7] As von Verschuer's assistant, Mengele focused on the genetic factors that result in a cleft lip and palate, or a cleft chin.[10] His thesis on the subject earned him a cum laude doctorate in medicine (MD) from the University of Frankfurt in 1938.[11] (Both of his degrees were revoked by the issuing universities in the 1960s.)[12] In a letter of recommendation, von Verschuer praised Mengele's reliability and his ability to verbally present complex material in a clear manner.[13] The American author Robert Jay Lifton notes that Mengele's published works were in keeping with the scientific mainstream of the time, and would probably have been viewed as valid scientific efforts even outside Nazi Germany.[13]