Dr. Karski was the contact between the Polish resistance and the Polish government in exile. He repeatedly crossed enemy lines to act as a courier between his occupied nation and the West. Prior to his last departure from Poland, he was smuggled into the Warsaw Ghetto by the Jewish underground in order to witness the horrendous conditions. Asked to tell the story to the rest of the world, he reported on his experience to many world leaders, including American President Franklin Roosevelt.

With respect to the "functionalism versus intentionalism" debate about a master plan for the Final Solution, or the lack thereof, Hilberg posits what has been described as "a kind of structural determinism".[107] Hilberg argues that "a destruction process has an inherent pattern" and the "sequence of steps in a destruction process is thus determined". If a bureaucracy is motivated "to inflict maximum damage upon a group of people", it is "inevitable that a bureaucracy—no matter how decentralized its apparatus or how unplanned its activities—should push its victims through these stages", culminating in their annihilation.[112]
Because of this book, we will remember the names, the quirks -- the characters -- of the eight people who inhabited the secret annex and their brave Dutch helpers. We will be able to visualize them long after everyone who witnessed that horrific era is gone. It is because of Anne's diary that she and her family are among the few we will remember -- the ones we feel we know -- among the millions who suffered and died as she did.

In the final months of the war, SS guards moved camp inmates by train or on forced marches, often called “death marches,” in an attempt to prevent the Allied liberation of large numbers of prisoners. As Allied forces moved across Europe in a series of offensives against Germany, they began to encounter and liberate concentration camp prisoners, as well as prisoners en route by forced march from one camp to another. The marches continued until May 7, 1945, the day the German armed forces surrendered unconditionally to the Allies.
“With respect of the Jewish Question, the Führer has decided to make a clean sweep. He prophesied to the Jews that if they again brought about a world war, they would live to see their annihilation in it. That wasn’t just a catchword… If the German people have now again sacrificed 160,000 dead on the eastern front, then those responsible for this bloody conflict will have to pay with their lives.”
His “obsession,” as he afterward called it—partly in mockery of the opposition his later views evoked—had its beginning in those repeated scenes of piled-up bodies as he investigated camp after camp. From then on, he could be said to carry the mark of Abel. He dedicated himself to helping the survivors get to Mandate Palestine, a goal that Britain had made illegal. In 1946, he reported from Tel Aviv on the uprising against British rule, and during the next two years he produced a pair of films on the struggles of the survivors to reach Palestine. In 1950, he published “In Search,” an examination of the effects of the European cataclysm on his experience and sensibility as an American Jew. (Thomas Mann acclaimed the book as “a human document of high order, written by a witness of our fantastic epoch whose gaze remained both clear and steady.”) Levin’s intensifying focus on the Jewish condition in the twentieth century grew more and more heated, and when his wife, the novelist Tereska Torres, handed him the French edition of the diary (it had previously appeared only in Dutch) he felt he had found what he had thirsted after: a voice crying up from the ground, an authentic witness to the German onslaught.
The Roma refer to the genocide of the Romani people as the Pořajmos.[414] Because they are traditionally a private people with a culture based on oral history, less is known about their experience than that of any other group.[415] Bauer writes that this can be attributed to the Roma's distrust and suspicion, and to their humiliation because some of the taboos in Romani culture regarding hygiene and sex were violated at Auschwitz.[416] In May 1942, the Roma were placed under similar laws to the Jews. On 16 December 1942, Himmler issued a decree that "Gypsy Mischlinge [mixed breeds], Roma Gypsies, and members of the clans of Balkan origins who are not of German blood" should be sent to Auschwitz, unless they had served in the Wehrmacht.[417] He adjusted the order on 15 November 1943; in the occupied Soviet areas, "sedentary Gypsies and part-Gypsies are to be treated as citizens of the country. Nomadic Gypsies and part-Gypsies are to be placed on the same level as Jews and placed in concentration camps."[418] Bauer argues that this adjustment reflected Nazi ideology that the Roma, originally an Aryan population, had been "spoiled" by non-Romani blood.[419]
As a temporary measure, while the top leadership considered long-term options, German authorities established ghettos in the Generalgouvernement (that part of German-occupied Poland not directly annexed to Germany, attached to German East Prussia or incorporated into the German-occupied Soviet Union) and in the District Wartheland, commonly called the Warthegau (an area of western Poland directly annexed to the German Reich). From late 1939, German SS and police authorities deported Polish, German, Austrian, and Czech Jews to these ghettos.
The ideology of Nazism brought together elements of antisemitism, racial hygiene, and eugenics, and combined them with pan-Germanism and territorial expansionism with the goal of obtaining more Lebensraum (living space) for the Germanic people.[16] Nazi Germany attempted to obtain this new territory by attacking Poland and the Soviet Union, intending to deport or kill the Jews and Slavs living there, who were considered by the Nazis to be inferior to the Aryan master race.[17]