But throughout Nazi-occupied Europe, relatively few non-Jewish persons were willing to risk their own lives to help the Jews. Notable exceptions included Oskar Schindler, a German who saved 1200 Jews by moving them from Plaszow labor camp to his hometown of Brunnlitz. The country of Denmark rescued nearly its entire population of Jews, over 7000, by transporting them to safety by sea. Italy and Bulgaria both refused to cooperate with German demands for deportations. Elsewhere in Europe, people generally stood by passively and watched as Jewish families were marched through the streets toward waiting trains, or in some cases, actively participated in Nazi persecutions.
The political situation in Germany and elsewhere in Europe after World War I (1914–1918) contributed to the rise of virulent antisemitism. Many Germans did not accept that their country had been defeated, which gave birth to the stab-in-the-back myth. This insinuated that it was disloyal politicians, chiefly Jews and communists, who had orchestrated Germany's surrender. Inflaming the anti-Jewish sentiment was the apparent over-representation of Jews in the leadership of communist revolutionary governments in Europe, such as Ernst Toller, head of a short-lived revolutionary government in Bavaria. This perception contributed to the canard of Jewish Bolshevism.[65]
First, the rescuer must have been actively involved in saving Jews from the threat of death or deportation to concentration camps or killing centers. Second, the rescuer must have risked their own life or liberty in their attempt to save Jews. Third, the original motive for rescue must have been to protect and save Jews from the Holocaust. Other motivations, not considered for qualification, include financial gain, protecting Jews in order to convert them to Christianity, taking a Jewish child with the intention of adoption, or rescuing individuals during resistance activities that were not explicitly geared towards rescuing Jews. Finally, there must be first-hand testimony from those rescued to verify the individual's role in the rescue. If testimony does not exist or cannot be found, there must be irrefutable documentation of the individual's participation in the rescue and the conditions surrounding it.

I was miserable being me. . . . I was on the brink of that awful abyss of teenagedom and I, too, needed someone to talk to. . . . (Ironically, Anne, too, expressed a longing for more attention from her father.) . . . Dad’s whole life was a series of meetings. At home, he was too tired or too frustrated to unload on. I had something else in common with Anne. We both had to share with sisters who were prettier and smarter than we felt we were. . . . Despite the monumental differences in our situations, to this day I feel that Anne helped me get through the teens with a sense of inner focus. She spoke for me. She was strong for me. She had so much hope when I was ready to call it quits.
After the war, Dr. Josef Mengele worked on a farm under an assumed name for a few years, then escaped to South America; he was never put on trial as a war criminal. If he had been captured and put on trial, Dr. Gisella Perl was prepared to testify against him. Dr. Perl worked as a prison doctor under Dr. Mengele, and was a prisoner herself. According to the book "Mengele, the Complete Story," Dr. Perl claimed that a woman prisoner named Ibi had escaped the gas chamber six times by jumping off the truck that was taking the prisoners from the Judenrampe to the gas chambers; Dr. Mengele was enraged when he discovered that she had returned to the selection line.
On November 12, 1938, Field Marshal Hermann Göring convened a meeting of Nazi officials to discuss the damage to the German economy from pogroms. The Jewish community was fined one billion Reichsmarks. Moreover, Jews were made responsible for cleaning up the damage. German Jews, but not foreign Jews, were barred from collecting insurance. In addition, Jews were soon denied entry to theatres, forced to travel in separate compartments on trains, and excluded from German schools. These new restrictions were added to earlier prohibitions, such as those barring Jews from earning university degrees, from owning businesses, or from practicing law or medicine in the service of non-Jews. The Nazis would continue to confiscate Jewish property in a program called “Aryanization.” Göring concluded the November meeting with a note of irony: “I would not like to be a Jew in Germany!”
Richard Freund, an American archaeologist at the University of Hartford, in Connecticut, specializes in Jewish history, modern and ancient. He has been traversing the globe for almost three decades, working at sites as varied as Qumran, where the Dead Sea Scrolls were discovered, and at Sobibor, a Nazi extermination camp in eastern Poland. Unusually for a man in his profession, he rarely puts trowel to earth. Instead, Freund, who is rumpled and stout, with eyes that seem locked in a perpetual squint, practices what he calls “noninvasive archaeology,” which uses ground-penetrating radar and other types of computerized electronic technology to discover and describe structures hidden underground.
Executions by the Einsatzgruppen, mobile killing squads,were abandoned for practical reasons. Although approximately 1.5 million Jews had been shot by the winter of 1941, the Nazis felt that the efficiency of this slow and cumbersome method left much to be desired. Moreover, they found it was bad for the sol­diers’ morale. Himmler himself, commander of the SS and as such responsible for the annihilation of the Jews, was persuaded, after having witnessed such an execu­tion, that it badly affected the mental health of those carrying out the execution. The institutionalization of organized murder, founded on a division of labor and carried out in special installations expressly designed for this purpose, distanced the executioner from the victim, an indispensable psychological advantage in an enterprise of annihilation of such a huge scale.
On 19 October 1943, five days after the prisoner revolt in Sobibór, Operation Reinhard was terminated by Odilo Globocnik on behalf of Himmler. The camps responsible for the killing of nearly 2,700,000 Jews were soon closed. Bełżec, Sobibór, and Treblinka were dismantled and ploughed over before spring.[94] The operation was followed by the single largest German massacre of Jews in the entire war carried out on 3 November 1943; with approximately 43,000 prisoners shot one-by-one simultaneously in three nearby locations by the Reserve Police Battalion 101 hand-in-hand with the Trawniki men from Ukraine.[95] Auschwitz alone had enough capacity to fulfill the Nazis' remaining extermination needs.[79]

Reichsführer-SS Heinrich Himmler visited Auschwitz-Birkenau on July 17 and 18, 1942 and watched the gassing of 449 women and children in Bunker No. 1, according to his biographer Peter Padfield. On July 23, 1942, Himmler ordered the quarantine of the Birkenau camp because of a typhus epidemic, but the gassing of the Jews continued. On December 28, 1942, Himmler issued an order that the death rate "must be reduced at all costs" according to document 2172-PS that was introduced at the Nuremberg IMT. He meant the death rate from typhus; the gassing of the Jews did not stop.
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]