A young Jewish girl named Anne Frank (1929-1945), her parents and older sister moved to the Netherlands from Germany after Adolf Hilter and the Nazis came to power there in 1933 and made life increasingly difficult for Jews. In 1942, Frank and her family went into hiding in a secret apartment behind her father’s business in German-occupied Amsterdam. The Franks were discovered in 1944 and sent to concentration camps; only Anne’s father survived. Anne Frank’s diary of her family’s time in hiding, first published in 1947, has been translated into almost 70 languages and is one of the most widely read accounts of the Holocaust.

Eventually, Birkenau held the majority of prisoners in the Auschwitz complex, including Jews, Poles, Germans, and Gypsies. Furthermore, it maintained the most degrading and inhumane conditions–inclusive of the complex’s gas chambers and crematoria. A third section, Auschwitz III, was constructed in nearby Monowitz, and consisted of a forced labor camp called Buna-Monowitz.
This complex incorporated 45 forced labor sub-camps. The name Buna was based on the Buna synthetic rubber factory on site, owned by I.G. Farben, Germany’s largest chemical company. Most workers at this and other German-owned factories were Jewish inmates. The labor would push inmates to the point of total exhaustion, at which time new laborers replaced them.
Construction of crematorium I began at Auschwitz I at the end of June or beginning of July 1940.[26] Initially intended not for mass murder but for prisoners who had been executed or had otherwise died in the camps, the crematorium was in operation from August 1940 until July 1943, by which time the crematoria at Auschwitz II had taken over.[27] By May 1942 three ovens had been installed in crematorium I, which together could burn 340 bodies in 24 hours.[28]

And that was not all: the book was later translated into around 70 languages and adapted for stage and screen. People all over the world were introduced to Anne's story and in 1960 the hiding place became a museum: the Anne Frank House. Until his death in 1980, Otto remained closely involved with the Anne Frank House and the museum: he hoped that readers of the diary would become aware of the dangers of discrimination, racism, and hatred of Jews. 

In its racial categorization, Nazism viewed what it called the Aryan race as the master race of the world—a race that was superior to all other races.[136] It viewed Aryans as being in racial conflict with a mixed race people, the Jews, whom the Nazis identified as a dangerous enemy of the Aryans. It also viewed a number of other peoples as dangerous to the well-being of the Aryan race. In order to preserve the perceived racial purity of the Aryan race, a set of race laws was introduced in 1935 which came to be known as the Nuremberg Laws. At first these laws only prevented sexual relations and marriages between Germans and Jews, but they were later extended to the "Gypsies, Negroes, and their bastard offspring", who were described by the Nazis as people of "alien blood".[137][138] Such relations between Aryans (cf. Aryan certificate) and non-Aryans were now punishable under the race laws as Rassenschande or "race defilement".[137] After the war began, the race defilement law was extended to include all foreigners (non-Germans).[139] At the bottom of the racial scale of non-Aryans were Jews, Romanis, Slavs[140] and blacks.[141] To maintain the "purity and strength" of the Aryan race, the Nazis eventually sought to exterminate Jews, Romani, Slavs and the physically and mentally disabled.[140][142] Other groups deemed "degenerate" and "asocial" who were not targeted for extermination, but were subjected to exclusionary treatment by the Nazi state, included homosexuals, blacks, Jehovah's Witnesses and political opponents.[142] One of Hitler's ambitions at the start of the war was to exterminate, expel or enslave most or all Slavs from Central and Eastern Europe in order to acquire living space for German settlers.[143]
When we think of the crimes of Nazi doctors, what comes to mind are their cruel and sometimes fatal experiments… Yet when we turn to the Nazi doctors’ role in Auschwitz, it was not the experiments that were most significant. Rather, it was his participation in the killing process—indeed his supervision of Auschwitz mass murder from beginning to end. 1

Officials and lawyers in the Third Reich were also intrigued by anti-miscegenation statutes, because the policing of sex was necessary to cleanse the Aryan race. Hitler, who had been largely asexual during his crucial years as a failing painter in Vienna, was obsessed with sex and blood. The United States at the time was a global leader in banning mixed marriages, going so far as to criminally punish those who defied the law. (Many of these laws were not struck down in the United States until the Supreme Court’s 1967 Loving v. Virginia case.) The Prussian Memorandum explicitly invoked U.S. laws that promoted segregation to maintain racial purity, and the sexual morality of white women in particular. Similarly, the third Nuremburg Law expressly forbid marriages and extra-marital relations between Germans and Jews, and promised hard labor in prison for law-breakers. The more one reads about the American and Nazi fixation on race, the more evident it becomes that at the very core of racist ideology is a primal fear of sexual inadequacy, of pollution, of mixing. Racial nationalism, the ideology of the Nazis, took this idea to its logical end.
The Nazis used propaganda to promulgate the concept of Rassenschande ("race defilement") to justify the need for racial laws.[214] In September 1935, the Nuremberg Laws were enacted. These laws initially prohibited sexual relations and marriages between Aryans and Jews and were later extended to include "Gypsies, Negroes or their bastard offspring".[215] The law also forbade the employment of German women under the age of 45 as domestic servants in Jewish households.[216] The Reich Citizenship Law stated that only those of "German or related blood" could be citizens.[217] Thus Jews and other non-Aryans were stripped of their German citizenship. The law also permitted the Nazis to deny citizenship to anyone who was not supportive enough of the regime.[217] A supplementary decree issued in November defined as Jewish anyone with three Jewish grandparents, or two grandparents if the Jewish faith was followed.[218]
Then, on January 27, 1945, the Red Army reached the camp. Inside, they found prisoners covered in excrement and starving to death, children who had been used for medical experiments, and other shocking evidence of the Nazis’ crimes. At Birkenau, the guards had failed to destroy some of the storerooms where prisoners’ stolen belongings were stored before being transported back to the Reich. Among the remainingitems were 7.7 tons of human hair, 370,000 men’s suits and 837,000 women’s coats and dresses.
I started looking for work as soon as I arrived, finding a job earning $35 (£23) a week and by 1955 I had opened up my own business in Brooklyn, Queens, as a tailor and I think I did OK. I worked for some dignitaries, including Henry Kissinger and Nancy Reagan, and I also did a lot for the Johnsons. I’d be putting together the garments designed for them by the likes of Oscar de la Renta and Geoffrey Beene.
“The problem is,” Schneidermann told me, “there weren’t any journalists with enough credibility to tell what was really happening in Germany without being suspected of being biased or taking sides.” It was in part the Times’ quest for credibility with its public—meaning, Schneidermann says, not seeming like “a ‘Jewish newspaper’ or a ‘Communist newspaper’ ”—that prevented it from attaining the decibel level that we would now consider appropriate. “Activist journalism,” Schneidermann writes, “journalism that subordinates the quest for truth to the quest for a truth that is useful to its cause, is the only journalism that, today, doesn’t have to feel ashamed about what it produced. . . . Everything reasonable, scrupulous, balanced, in my opinion, contributed to lulling the crowd to sleep.” But, he continues, “If I’d been a reader at the time, I probably would have quickly stopped reading after a few days, dissuaded by the bludgeoning.”
"Dr. Mengele had always been more interested in Tibi. I am not sure why - perhaps because he was the older twin. Mengele made several operations on Tibi. One surgery on his spine left my brother paralyzed. He could not walk anymore. Then they took out his sexual organs. After the fourth operation, I did not see Tibi anymore. I cannot tell you how I felt. It is impossible to put into words how I felt. They had taken away my father, my mother, my two older brothers - and now, my twin ..."

Over the years, there have been dissenting views about the preservationist approach. “I’m not convinced about the current plans for Auschwitz,” said Jonathan Webber, a former member of the International Auschwitz Council of advisers, who teaches in the European Studies program at the Jagiellonian University in Krakow. “If you have a very good memorial, you could achieve that without having to have all this effort on conservation and restoration,” he added.

Via the offices of the Sicherheitsdienst, the German security police, prison in Amsterdam, and the Westerbork transit camp, the people from the Secret Annex were put on transport to the Auschwitz-Birkenau concentration and extermination camp. The train journey took three days, during which Anne and over a thousand others were packed closely together in cattle wagons. There was little food and water and only a barrel for a toilet. 
The museum has decided not to conserve one thing: the mass of human hair that fills a vast vitrine. Over the years, the hair has lost its individual colors and has begun to gray. Out of respect for the dead, it cannot be photographed. Several years ago, the International Auschwitz Council of advisers had an agonizing debate about the hair. Some suggested burying it. Others wanted to conserve it. But one adviser raised a point: How can we know if its original owners are dead or alive? Who are we to determine its fate?
In the spring of 1941, the SS—along with doctors and officials of the T-4 Euthanasia Program—introduced the Action 14f13 programme meant for extermination of selected concentration camp prisoners.[31] The Inspectorate of the Concentration Camps categorized all files dealing with the death of prisoners as 14f, and those of prisoners sent to the T-4 gas chambers as 14f13. Under the language regulations of the SS, selected prisoners were designated for "special treatment (German: Sonderbehandlung) 14f13". Prisoners were officially selected based on their medical condition; namely, those permanently unfit for labor due to illness. Unofficially, racial and eugenic criteria were used: Jews, the handicapped, and those with criminal or antisocial records were selected.[32]:p.144 For Jewish prisoners there was not even the pretense of a medical examination: the arrest record was listed as a physician's "diagnosis".[32]:pp. 147–148 In early 1943, as the need for labor increased and the gas chambers at Auschwitz became operational, Heinrich Himmler ordered the end of Action 14f13.[32]:p.150