The Jews killed represented around one third of the world population of Jews,[398] and about two-thirds of European Jewry, based on an estimate of 9.7 million Jews in Europe at the start of the war.[399] Much of the uncertainty stems from the lack of a reliable figure for the number of Jews in Europe in 1939, numerous border changes that make avoiding double-counting of victims difficult, lack of accurate records from the perpetrators, and uncertainty about whether deaths occurring months after liberation, but caused by the persecution, should be counted.[392]

One of the most atrocious eras in human history is without a doubt the Holocaust. About 11 million people, including approximately 6 million Jews, are estimated to have been slaughtered at the hands of Adolf Hitler and the Nazi Party. Jews were forced to live in ghettos and then rounded up to be sent to concentration and extermination camps, where they were herded into gas chambers and killed. At a number of concentration camps, Nazi doctors conducted gruesome and horrific medical experiments on prisoners against their will. This leads us to one of the most infamous Nazi doctors who ever lived, Dr. Josef Mengele.

The match was perfect. The video image of the photograph was imposed precisely over the video image of the skull. It was a face wrapped over a skull, subject over object, an image of life over an image of death. While the images helped to push the probability calculation further in the direction of a definitive identification, they did more than that, for it was the appearance of a previously unseen image that produced the potential for conviction.

Heinrich Himmler witnessed this killing process and decided to develop a cheaper, more effective method of murder that would not be as upsetting for the perpetrators. The Nazis were already using gas to murder the mentally and physically disabled; this was now to be applied to the Jews as well. This section will discuss the the Wannsee Conference and the ‘Final Solution to the Jewish Question’.
In January 1933, after a bitter ten-year political struggle, Adolf Hitler came to power in Germany. During his rise to power, Hitler had repeatedly blamed the Jews for Germany's defeat in World War I and subsequent economic hardships. Hitler also put forward racial theories asserting that Germans with fair skin, blond hair and blue eyes were the supreme form of human, or master race. The Jews, according to Hitler, were the racial opposite, and were actively engaged in an international conspiracy to keep this master race from assuming its rightful position as rulers of the world.
Some people believe that Hitler always intended to murder the Jews. In a letter dated 16 September 1919, he wrote, “the final objective must be the complete removal of the Jews”. Was the road to the death camps foreseen and planned in advance? Or was it, as others believe, an unplanned response to circumstances that arose? What is certain is that Hitler and his inner circle were obsessed with the Jews. They believed that they were responsible for all the ills of the world.
Cesarani notes that by 1943, as the military position of the German forces deteriorated, the Nazi leadership became more openly explicit about the Final Solution. In March, Goebbels confided to his diary: "On the Jewish question especially, we are in it so deeply that there is no getting out any longer. And that is a good thing. Experience teaches that a movement and a people who have burned their bridges fight with much greater determination and fewer constraints than those that have a chance of retreat."[127]
The economic strains of the Great Depression led some in the German medical establishment to advocate murder (euphemistically called "euthanasia") of the "incurable" mentally and physically disabled as a cost-saving measure to free up funds for the curable.[66] By the time the National Socialist German Workers' Party, or Nazi Party,[j] came to power in 1933, there was already a tendency to seek to save the racially "valuable", while ridding society of the racially "undesirable".[68] The party had originated in 1920[67] as an offshoot of the völkisch movement, and it adopted that movement's antisemitism.[69] Early antisemites in the party included Dietrich Eckart, publisher of the Völkischer Beobachter, the party's newspaper, and Alfred Rosenberg, who wrote antisemitic articles for it in the 1920s. Rosenberg's vision of a secretive Jewish conspiracy ruling the world would influence Hitler's views of Jews by making them the driving force behind communism.[70] The origin and first expression of Hitler's antisemitism remain a matter of debate.[71] Central to his world view was the idea of expansion and lebensraum (living space) for Germany. Open about his hatred of Jews, he subscribed to the common antisemitic stereotypes.[72] From the early 1920s onwards, he compared the Jews to germs and said they should be dealt with in the same way. He viewed Marxism as a Jewish doctrine, said he was fighting against "Jewish Marxism", and believed that Jews had created communism as part of a conspiracy to destroy Germany.[73]
Sources: C.A.N.D.L.E.S; Kor, Eva Mozes. Echoes from Auschwitz. IN.: C.A.N.D.L.E.S. 1995; Lifton, Robert Jay. The Nazi Doctors. The United States: Basic Books. 1986; Nyiszli., Dr. Miklos. Auschwitz: A Doctor's Eyewitness Account. New York: Fawcett Crest. 1960; Posner, Gerald L. and John Ware. Mengele: The Complete Story. New York: Dell Publishing. 1986; Ramati, Alexander. And the Violins Stopped Playing

Now Albert Goering, who died in 1966, is being considered for an honour given to those who risked their lives to save Jews during the Holocaust. A file is being prepared at Yad Vashem The Holocaust Martyrs' and Heroes' Remembrance Authority, the Holocaust memorial and research centre in Israel, to put Albert Goering forward for the Righteous Among the Nations award. A campaign to honour him follows growing recognition of his efforts to save victims of the Nazis.
If Anne Frank had not perished in the criminal malevolence of Bergen-Belsen early in 1945, she would have marked her sixty-eighth birthday last June. And even if she had not kept the extraordinary diary through which we know her it is likely that we would number her among the famous of this century—though perhaps not so dramatically as we do now. She was born to be a writer. At thirteen, she felt her power; at fifteen, she was in command of it. It is easy to imagine—had she been allowed to live—a long row of novels and essays spilling from her fluent and ripening pen. We can be certain (as certain as one can be of anything hypothetical) that her mature prose would today be noted for its wit and acuity, and almost as certain that the trajectory of her work would be closer to that of Nadine Gordimer, say, than to that of Francoise Sagan. As an international literary presence, she would be thick rather than thin. “I want to go on living even after my death!” she exclaimed in the spring of 1944.
When Hitler came to power legally on January 30, 1933, as the head of a coalition government, his first objective was to consolidate power and to eliminate political opposition. The assault against the Jews began on April 1 with a boycott of Jewish businesses. A week later the Nazis dismissed Jews from the civil service, and by the end of the month the participation of Jews in German schools was restricted by a quota. On May 10 thousands of Nazi students, together with many professors, stormed university libraries and bookstores in 30 cities throughout Germany to remove tens of thousands of books written by non-Aryans and those opposed to Nazi ideology. The books were tossed into bonfires in an effort to cleanse German culture of “un-Germanic” writings. A century earlier Heinrich Heine—a German poet of Jewish origin—had said, “Where one burns books, one will, in the end, burn people.” In Nazi Germany the time between the burning of Jewish books and the burning of Jews was eight years.
In the view of Christian Gerlach, Hitler announced his decision to annihilate the Jews on or around 12 December 1941, probably on 12 December during a speech to the Gauleiters, part of the Nazi Party leadership.[259] This was one day after the German declaration of war against the United States, which followed the Japanese attack on Pearl Harbour on 7 December and the United States declaration of war on Japan on 8 December.[260] According to Deborah Dwork and Robert Jan van Pelt, Hitler had trusted American Jews, whom he assumed were all-powerful, to keep their government out of the war in the interests of German Jews. When America declared war, the Jews were blamed.[261] Joseph Goebbels, the Reich Minister of Propaganda, noted of Hitler's speech: "He warned the Jews that if they were to cause another world war, it would lead to their destruction. ... Now the world war has come. The destruction of the Jews must be its necessary consequence."[260][o]
At least 130 Righteous Gentiles have settled in Israel. They were welcomed by Israeli authorities, and were granted citizenship. In the mid-1980s, they became entitled to special pensions. Some of them settled in British Mandatory Palestine before Israel's establishment shortly after World War II, or in the early years of the new state of Israel, while others came later. Those who came earlier often spoke fluent Hebrew and have integrated into Israeli society.[6]
American soldiers stare down at a mass grave in Nordhausen concentration camp  © Originally a concentration camp for Polish political prisoners, Auschwitz was greatly expanded in 1941 with the addition of a much larger camp at nearby Birkenau. In all, Auschwitz-Birkenau and its sub-camps held 400,000 registered prisoners including 205,000 Jews, 137,000 Poles, 21,000 Gypsies, 12,000 Soviet POWs and 25,000 others (including a few British POWs). In this largest and worst of all the Nazi concentration camps, 210,000 prisoners died of starvation and abuse.
Meanwhile, beginning in the fall of 1939, Nazi officials selected around 70,000 Germans institutionalized for mental illness or disabilities to be gassed to death in the so-called Euthanasia Program. After prominent German religious leaders protested, Hitler put an end to the program in August 1941, though killings of the disabled continued in secrecy, and by 1945 some 275,000 people deemed handicapped from all over Europe had been killed. In hindsight, it seems clear that the Euthanasia Program functioned as a pilot for the Holocaust.

Dogim backed down; the diggers pressed on. On April 9, Farber announced that they’d reached the roots of a tree near the barbed-wire fence that encircled the camp’s perimeter. Three days later, he made a tentative stab with a makeshift probe he’d fashioned out of copper tubing. Gone was the stench of the pits. “We could feel the fresh April air, and it gave us strength,” he later recalled. “We saw with our own eyes that freedom was near.”

The hero, or irritant (depending on which side of the controversy one favors), in the genesis of the diary’s dramatization was Meyer Levin, a Chicago-born novelist of the social-realist school, the author of such fairly successful works as “The Old Bunch,” “Compulsion,” and “The Settlers.” Levin began as a man of the left, though a strong anti-Stalinist: he was drawn to proletarian fiction (“Citizens,” about steelworkers), and had gone to Spain in the thirties to report on the Civil War. In 1945, as a war correspondent attached to the Fourth Armored Division, he was among the first Americans to enter Buchenwald, Dachau, and Bergen-Belsen. What he saw there was ungraspable and unendurable. “As I groped in the first weeks, beginning to apprehend the monstrous shape of the story I would have to tell,” he wrote, “I knew already that I would never penetrate its heart of bile, for the magnitude of this horror seemed beyond human register.” The truest telling, he affirmed, would have to rise up out of the mouth of a victim.

According to a news article in the Quad-City Times, Yanina Cywinska survived the gas chamber at Auschwitz when she was 10 years old. Cywinska presented the Geifman Lecture in Holocaust Studies at the Augustana College in Rock Island, IL on April 11, 2005, sharing her firsthand account of the atrocities that she endured as a prisoner in Auschwitz and later at Dachau.
A week later, he and other members of the crew received a visit from the camp’s Sturmbannführer, or commander, a 30-year-old dandy who wore boots polished shiny as mirrors, white gloves that reached up to his elbows, and smelled strongly of perfume. Zeidel remembered what the commandant told them: “Just about 90,000 people were killed here, lying in mass graves.” But, the Sturmbannführer explained, “there must not be any trace” of what had happened at Ponar, lest Nazi command be linked to the mass murder of civilians. All the bodies would have to be exhumed and burned. The wood collected by Zeidel and his fellow prisoners would form the pyres.
At the end of the war, between 50,000 and 100,000 Jewish survivors were living in three zones of occupation: American, British and Soviet. Within a year, that figure grew to about 200,000. The American zone of occupation contained more than 90 percent of the Jewish displaced persons (DPs). The Jewish DPs would not and could not return to their homes, which brought back such horrible memories and still held the threat of danger from anti-Semitic neighbors. Thus, they languished in DP camps until emigration could be arranged to Palestine, and later Israel, the United States, South America and other countries. The last DP camp closed in 1957 (David S. Wyman, "The United States," in David S. Wyman, ed., The World Reacts to the Holocaust, Baltimore, MD: Johns Hopkins University Press, 1996, pp. 707­10).
Miep Gies, one of the Dutch citizens who hid the Franks during the Holocaust, kept Anne Frank’s writings, including her diary. She handed the papers to Otto Frank on the day he learned of his daughters’ deaths. He organized the papers and worked doggedly to get the diary published, first in Dutch in 1947. The first American edition appeared in 1952.
Beginning in late 1941, the Germans began mass transports from the ghettoes in Poland to the concentration camps, starting with those people viewed as the least useful: the sick, old and weak and the very young. The first mass gassings began at the camp of Belzec, near Lublin, on March 17, 1942. Five more mass killing centers were built at camps in occupied Poland, including Chelmno, Sobibor, Treblinka, Majdanek and the largest of all, Auschwitz-Birkenau. From 1942 to 1945, Jews were deported to the camps from all over Europe, including German-controlled territory as well as those countries allied with Germany. The heaviest deportations took place during the summer and fall of 1942, when more than 300,000 people were deported from the Warsaw ghetto alone.
You find the stories of Irena Sendler, who defied the Nazis and saved 2,500 Jewish children by smuggling them out of the Warsaw Ghetto .. Maria von Maltzan, who risked everything to defy Hitler and the Nazi Régime .. Miep Gies, who risked her life daily to hide Anne Frank and her family .. the Rescue of the Danish Jews, Varian Fry, the American Schindler,  Kurt Gerstein SS Officer, the site Courage and Survival ..
Meanwhile, beginning in the fall of 1939, Nazi officials selected around 70,000 Germans institutionalized for mental illness or disabilities to be gassed to death in the so-called Euthanasia Program. After prominent German religious leaders protested, Hitler put an end to the program in August 1941, though killings of the disabled continued in secrecy, and by 1945 some 275,000 people deemed handicapped from all over Europe had been killed. In hindsight, it seems clear that the Euthanasia Program functioned as a pilot for the Holocaust.
Following the invasion of Poland, German occupation policy especially targeted the Jews but also brutalized non-Jewish Poles. In pursuit of lebensraum, Germany sought systematically to destroy Polish society and nationhood. The Nazis killed Polish priests and politicians, decimated the Polish leadership, and kidnapped the children of the Polish elite, who were raised as “voluntary Aryans” by their new German “parents.” Many Poles were also forced to perform hard labour on survival diets, were deprived of property and uprooted, and were interned in concentration camps.
After the December 12 meeting, these proclamations took a more precise tone: the Nazis needed to kill all Jews, including German Jews and Western European Jews, and they needed to do so systematically. What had started as uncertain and sporadic violence quickly turned into wholesale slaughter, complete with gas chambers and concentration camps. Six weeks later, SS chief Heinrich Himmler, the Nazi official responsible for the implementation of the Final Solution, ordered the first Jews of Europe to Auschwitz.

The next year, 1942, marked the beginning of mass murder on a scale unprecedented in all of human history. In January, fifteen top Nazis led by Reinhard Heydrich, second in command of the SS, convened the Wannsee Conference in Berlin to coordinate plans for the Final Solution. The Jews of Europe would now be rounded up and deported into occupied Poland where new extermination centers were being constructed at Belzec, Sobibor, Treblinka, and Auschwitz-Birkenau.
Throughout the Middle Ages in Europe, Jews were subjected to antisemitism based on Christian theology, which blamed them for killing Jesus. Even after the Reformation, Catholicism and Lutheranism continued to persecute Jews, accusing them of blood libels and subjecting them to pogroms and expulsions.[60][61] The second half of the 19th century saw the emergence in the German empire and Austria-Hungary of the völkisch movement, which was developed by such thinkers as Houston Stewart Chamberlain and Paul de Lagarde. The movement embraced a pseudo-scientific racism that viewed Jews as a race whose members were locked in mortal combat with the Aryan race for world domination.[62] These ideas became commonplace throughout Germany,[63] with the professional classes adopting an ideology that did not see humans as racial equals with equal hereditary value.[64] Although the völkisch parties had support in elections at first, by 1914 they were no longer influential. This did not mean that antisemitism had disappeared; instead it was incorporated into the platforms of several mainstream political parties.[63]
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]