According to Schneidermann, Trump designating American media as the “opposition” is the biggest threat to its credibility today, but not merely because the President’s broadsides inflict damage on their own. The trap, Schneidermann says, is for the media to enter into a war with Trump, and forget its job. “There is one professional obligation,” he told me. “To say things that are true.” (For news readers, he recommends the articles on page 7.) The real subject of his book, he added, is that “it’s very easy to be in a collective blindness.” And the past can obscure the future. “Why didn’t the correspondents in the thirties see Hitler? Because they thought he was a German Mussolini,” Schneidermann said. “They said, O.K., we know Mussolini. They weren’t actually looking at Hitler.” In the book, he writes, “Every revolutionary process automatically produces denial. How can we accept the fact that, from now on, the order of things will be fundamentally different from what it always was?”
The lead editors of the Encyclopedia of Camps and Ghettos, 1933–1945 of the United States Holocaust Memorial Museum, Geoffrey Megargee and Martin Dean, cataloged some 42,500 Nazi ghettos and camps throughout Europe, spanning German-controlled areas from France to Russia and Germany itself, operating from 1933 to 1945. They estimate that 15 million to 20 million people died or were imprisoned in the sites.[36]
Things continued to get worse. The Germans began to require all Jewish people to wear yellow stars on their clothing. Some Jews were rounded up and taken to concentration camps. Then one day the order came that Margot would have to go to a labor camp. Otto was not going to let that happen. He and Edith had been preparing a place for the family to hide. The girls were told to pack up what they could. They had to wear all their clothes in layers because a suitcase would look too suspicious. Then they went to their hiding place.
The unified armed forces of Germany from 1935 to 1945 were called the Wehrmacht (defence force). This included the Heer (army), Kriegsmarine (navy), and the Luftwaffe (air force). From 2 August 1934, members of the armed forces were required to pledge an oath of unconditional obedience to Hitler personally. In contrast to the previous oath, which required allegiance to the constitution of the country and its lawful establishments, this new oath required members of the military to obey Hitler even if they were being ordered to do something illegal.[219] Hitler decreed that the army would have to tolerate and even offer logistical support to the Einsatzgruppen—the mobile death squads responsible for millions of deaths in Eastern Europe—when it was tactically possible to do so.[220] Wehrmacht troops also participated directly in the Holocaust by shooting civilians or committing genocide under the guise of anti-partisan operations.[221] The party line was that the Jews were the instigators of the partisan struggle and therefore needed to be eliminated.[222] On 8 July 1941, Heydrich announced that all Jews in the eastern conquered territories were to be regarded as partisans and gave the order for all male Jews between the ages of 15 and 45 to be shot.[223] By August this was extended to include the entire Jewish population.[224]
Jewish deportees arriving at Auschwitz-Birkenau immediately underwent selection. The SS staff chose some of the able-bodied for forced labor and sent the rest directly to the gas chambers, which were disguised as shower installations to mislead the victims. The belongings of all deportees were confiscated and sorted in the "Kanada" (Canada) warehouse for shipment back to Germany. Canada symbolized wealth to the prisoners.
There were factions within the Nazi Party, both conservative and radical.[37] The conservative Nazi Hermann Göring urged Hitler to conciliate with capitalists and reactionaries.[37] Other prominent conservative Nazis included Heinrich Himmler and Reinhard Heydrich.[38] Meanwhile, the radical Nazi Joseph Goebbels opposed capitalism, viewing it as having Jews at its core and he stressed the need for the party to emphasize both a proletarian and a national character. Those views were shared by Otto Strasser, who later left the Nazi Party in the belief that Hitler had allegedly betrayed the party's socialist goals by endorsing capitalism.[37]
Pseudo-scientific racist theories were central to Nazism, expressed in the idea of a "people's community" (Volksgemeinschaft). The party aimed to unite "racially desirable" Germans as national comrades, while excluding those deemed either to be political dissidents, physically or intellectually inferior, or of a foreign race (Fremdvölkische).[9] The Nazis sought to strengthen the Germanic people, the "Aryan master race", through racial purity and eugenics, broad social welfare programs, and a collective subordination of individual rights, which could be sacrificed for the good of the state on behalf of the people.

As a result of the Holocaust, the term "concentration camp" carries many of the connotations of "extermination camp" and is sometimes used synonymously. Because of these ominous connotations, the term "concentration camp", originally itself a euphemism, has been replaced by newer terms such as internment camp, resettlement camp, detention facility, etc., regardless of the actual circumstances of the camp, which can vary a great deal.