In May 1940, the Germans, who had entered World War II in September of the previous year, invaded the Netherlands and quickly made life increasingly restrictive and dangerous for Jewish people there. Between the summer of 1942 and September 1944, the Nazis and their Dutch collaborators deported more than 100,000 Jews in Holland to extermination camps.
On the night of the 27 February 1933 and 28 February 1933, someone set the Reichstag building on fire. This was the building where the German Parliament held their meetings. The Nazis blamed the communists. Opponents of the Nazis said that the Nazis themselves had done it to come to power. On the very same day, an emergency law called Reichstagsbrandverordnung was passed. The government claimed it was to protect the state from people trying to hurt the country. With this law, most of the civil rights of the Weimar Republic did not count any longer. The Nazis used this against the other political parties. Members of the communist and social-democratic parties were put into prison or killed.
Following Operation Barbarossa, the Soviet Union was also plundered. In 1943 alone, 9,000,000 tons of cereals, 2,000,000 tonnes (2,000,000 long tons; 2,200,000 short tons) of fodder, 3,000,000 tonnes (3,000,000 long tons; 3,300,000 short tons) of potatoes, and 662,000 tonnes (652,000 long tons; 730,000 short tons) of meats were sent back to Germany. During the course of the German occupation, some 12 million pigs and 13 million sheep were taken. The value of this plunder is estimated at 4 billion Reichsmarks. This relatively low number in comparison to the occupied nations of Western Europe can be attributed to the devastating fighting on the Eastern Front.
Pope Pius XI had the "Mit brennender Sorge" ("With Burning Concern") encyclical smuggled into Germany for Passion Sunday 1937 and read from every pulpit as it denounced the systematic hostility of the regime toward the church. In response, Goebbels renewed the regime's crackdown and propaganda against Catholics. Enrolment in denominational schools dropped sharply and by 1939 all such schools were disbanded or converted to public facilities. Later Catholic protests included the 22 March 1942 pastoral letter by the German bishops on "The Struggle against Christianity and the Church". About 30 percent of Catholic priests were disciplined by police during the Nazi era. A vast security network spied on the activities of clergy and priests were frequently denounced, arrested or sent to concentration camps – many to the dedicated clergy barracks at Dachau. In the areas of Poland annexed in 1939, the Nazis instigated a brutal suppression and systematic dismantling of the Catholic Church.
The commander of Auschwitz-Birkenau, Rudolf Höss, stated in his autobiography that in 1941 (no exact date is given) he was summoned to Berlin, where Himmler informed him that Hitler had issued an order to solve the “Jewish Question” for good, and that the order was to be implemented by the SS. “The existing extermination places in the east are unsuited to a large scale, long-term action. I have designated Auschwitz for this purpose,” Himmler said.
Heinrich Himmler's Schutzstaffel (SS) took full control of the police and the concentration camps throughout Germany in 1934–35. Himmler expanded the role of the camps to hold so-called "racially undesirable elements", such as Jews, Gypsies/Romanis/Sintis, Serbs, Poles, disabled people, and criminals. The number of people in the camps, which had fallen to 7,500, grew again to 21,000 by the start of World War II and peaked at 715,000 in January 1945.