usage.: Definition 4 of Nazi has existed at least since 1980 and parallels other words such as police (def. 6), as in thought police, and cop2 (def. 2), as in language cops. Though this use is usually intended as jocular, it is sometimes used intentionally to denigrate an opposing point of view. However, many people find these uses offensive, feeling that they trivialize the terrible crimes of the Nazis of Germany.
Birkenau (Auschwitz II) was established in October 1941, three kilometers from Auschwitz. Exterminations in Birkenau began in March 1942. There were four gas chambers in the camp that used Zyklon B gas. Until November 1944 the camp functioned as a factory for mass murder, receiving transports from all over Europe. Most of those brought to the camp were Jews and nearly all were immediately sent to the gas chambers. Only a small percentage was selected for labor in the camp itself, labor in munitions plants at satellite camps, or the “medical” experiments of Dr. Josef Mengele and his staff. In the spring and summer of 1944, the rate of extermination was increased as the Jews of Hungary and the Lodz ghetto were brought to the camp.
Only after the true scope of the Holocaust’s horrors were known did the world begin to react to what had happened at Auschwitz. Though the Nazis fled and tried to cover up their deeds, making it impossible to ever know the complete history of their crimes, the voices of the victims and survivors live on through their testimony. All in all, 6 million Jews perished in the Holocaust. Today, a museum and memorial at Auschwitz preserves the remnants of the Nazis’ crimes—a reminder of the many who were killed and a testament to those who survived.

"Like the adults, the kids were only a mere bag of bones, without muscles or fat, and the thin skin like pergament scrubbed through and through beyond the hard bones of the skeleton and ignited itself to ulcerated wounds. Abscesses covered the underfed body from the top to the bottom and thus deprived it from the last rest of energy. The mouth was deeply gnawed by noma-abscesses, hollowed out the jaw and perforated the cheeks like cancer". Many decaying bodies were full of water because of the burning hunger, they swelled to shapeless bulks which could not move anymore. Diarrhoea, lasting for weeks, dissolved their irresistant bodies until nothing remained ....." 

There are only two possibilities in Germany; do not imagine that the people will forever go with the middle party, the party of compromises; one day it will turn to those who have most consistently foretold the coming ruin and have sought to dissociate themselves from it. And that party is either the Left: and then God help us! for it will lead us to complete destruction - to Bolshevism, or else it is a party of the Right which at the last, when the people is in utter despair, when it has lost all its spirit and has no longer any faith in anything, is determined for its part ruthlessly to seize the reins of power - that is the beginning of resistance of which I spoke a few minutes ago.[25]
The Republic of Czechoslovakia was home to a substantial minority of Germans, who lived mostly in the Sudetenland. Under pressure from separatist groups within the Sudeten German Party, the Czechoslovak government offered economic concessions to the region.[66] Hitler decided to incorporate not just the Sudetenland but all of Czechoslovakia into the Reich.[67] The Nazis undertook a propaganda campaign to try to generate support for an invasion.[68] Top German military leaders opposed the plan, as Germany was not yet ready for war.[69]

The prisoners’ camp routine consisted of many duties. The daily schedule included waking at dawn, straightening one’s sleep area, morning roll call, the trip to work, long hours of hard labor, standing in line for a pitiful meal, the return to camp, block inspection, and evening roll call. During roll call, prisoners were made to stand completely motionless and quiet for hours, in extremely thin clothing, irrespective of the weather. Whoever fell or even stumbled was killed. Prisoners had to focus all their energy merely on surviving the day’s tortures.
A parallel system operated later at Birkenau in 1942-43, except that for the majority the 'showers' proved to be gas chambers. Only about 10 percent of Jewish transports were registered, disinfected, shaven and showered in the 'central sauna' before being assigned barracks. In May 1944, a spur line was built right into the camp to accelerate and simplify the handling of the tens of thousands of Hungarian and other Jews deported in the spring and summer of 1944.

Officials at the camp obeyed Himmler. In late 1944, theydismantled part of the gas chambers,    forcing, eyewitnesses would later recall, the Sonderkommando—a group of mostly Jewish prisoners who were made to run the gas chambers—to dismantle the structures piece by piece. Then, as the Russians closed in that January, the remaining buildings were destroyed, blown up completely using dynamite. However, the ruins remained.

In most of the concentration camps, the Nazi SS either installed or had plans to install gas chambers to assist in their daily business of killing prisoners who were too weak or sick to work. Gas chambers were also to kill small targeted groups of individuals whom the Nazis wanted to eliminate (Polish resistance fighters, Soviet POWs, etc.). This was the purpose of the installation of gas chambers at Mauthausen, Sachsenhausen, Stutthof, Auschwitz I, Ravensbrück, Lublin/Majdanek, etc.
As far as we could see, there was no possibility in camp for any religious services. Sundays are workdays for the inmates. Among the Jewish prisoners the rabbis were treated especially badly. Officially the fight against religious affiliations is not admitted, but as a matter of fact National Socialism is no less antireligious than Bolshevism, with the only difference that it has not yet developed quite so far in the amalgamation of political and religious ideologies.

A concentration camp to house Soviet prisoners of war and Poles had been established at Majdanek, close to the Polish city of Lublin, during 1941. In the spring of 1942 gas chambers and crematoria were added, turning Majdanek into an extermination camp that would murder 78,000 people. Auschwitz-Birkenau, the most infamous of the Nazi death camps, was a massive concentration, forced labour and extermination camp at the centre of a network of more than 40 satellite camps. Upwards of 80 per cent of those Jews transported to Auschwitz-Birkenau were selected for immediate death.
Frank’s subsequent books and essays continued to win praise, if not popularity, earning her a reputation as a clear-eyed prophet carefully attuned to hypocrisy. Her readers will long remember the words she wrote in her diary at 15, included in the otherwise naive first section of "The House Behind": “I don’t believe that the big men are guilty of the war, oh no, the little man is just as guilty, otherwise the peoples of the world would have risen in revolt long ago! There’s in people simply an urge to destroy, an urge to kill, to murder and rage, and until all mankind without exception undergoes a great change, wars will be waged, everything that has been built up, cultivated and grown will be cut down and disfigured, and mankind will have to begin all over again.”

Auschwitz was the Nazis' largest concentration and extermination camp. It was founded on Himmler's orders on the 27th of April 1940, close to the small Polish town of Oświęcim. The first inmates - mostly Polish political prisoners - were brought there in June 1940 and were used for slave labour. By March 1941, more than 10 000 prisoners were registered here. The Auschwitz camp was renowned for its harshness, with the most infamous being Block 11 (known as the bunker), where prisoners received the cruellest punishments. In front of it stood the „black wall“, the site of frequent executions. The inscription „Arbeit macht frei!“ above the main gate of the original camp at Auschwitz was merely a cynical mockery.
In 1942, after the death of Armaments Minister Fritz Todt, Hitler appointed Albert Speer as his replacement.[274] Wartime rationing of consumer goods led to an increase in personal savings, funds which were in turn lent to the government to support the war effort.[275] By 1944, the war was consuming 75 percent of Germany's gross domestic product, compared to 60 percent in the Soviet Union and 55 percent in Britain.[276] Speer improved production by centralising planning and control, reducing production of consumer goods, and using forced labour and slavery.[277][278] The wartime economy eventually relied heavily upon the large-scale employment of slave labour. Germany imported and enslaved some 12 million people from 20 European countries to work in factories and on farms. Approximately 75 percent were Eastern European.[279] Many were casualties of Allied bombing, as they received poor air raid protection. Poor living conditions led to high rates of sickness, injury, and death, as well as sabotage and criminal activity.[280] The wartime economy also relied upon large-scale robbery, initially through the state seizing the property of Jewish citizens and later by plundering the resources of occupied territories.[281]

Between 1939 and 1945, the Nazi Party led regime, assisted by collaborationist governments and recruits from occupied countries, was responsible for the deaths of at least eleven million people,[94][95] including 5.5 to 6 million Jews (representing two-thirds of the Jewish population of Europe),[11][96][97] and between 200,000 and 1,500,000 Romani people.[98][99] The estimated total number includes the killing of nearly two million non-Jewish Poles,[100] over three million Soviet prisoners of war,[101] communists, and other political opponents, homosexuals, the physically and mentally disabled.[102][103]

Otto had prepared a secret hideout next to his place of work. The door was hidden behind some bookshelves. The hideout was small. The first floor had a bathroom and a small kitchen. The second floor had two rooms, one for Anne and Margot and one for her parents. There was also an attic where they stored food and where Anne would sometimes go to be alone.

In June 2016, the Auschwitz-Birkenau museum in the Polish town of Oswiecim re-discovered over 16,000 personal items belonging to victims of Auschwitz-Birkenau that had been lost in 1968. The items were originally discovered in 1967 by archaeologists excavating the concentration camp site, and were placed in 48 cardboard boxes in the Polish Academy of Sciences in Warsaw before being lost due to an anti-Semitic communist regime coming to power in 1968.

Jews, especially German, Western European and Russian, also worked as slave labour in work camps in Germany. The Kraft durch Freude Volkswagen works in Wolfsburg, for example, used the “cheap” Jewish slave labourers. A tile work in Sachsenhausen, owned and operated by the SS, used Jews and other slave labourers. In the Harz, near the concentration camp Dora-Mittelbau, Jews worked in an underground weapons factory.
The metaphor of war encouraged the inhumanity of the S.S. officers, which they called toughness; licensed physical violence against prisoners; and accounted for the military discipline that made everyday life in the K.L. unbearable. Particularly hated was the roll call, or Appell, which forced inmates to wake before dawn and stand outside, in all weather, to be counted and recounted. The process could go on for hours, Wachsmann writes, during which the S.S. guards were constantly on the move, punishing “infractions such as poor posture and dirty shoes.”

The similarities between the Rivesaltes camp and the Trump administration’s camps for children should already be apparent: a temporary, insufficiently conceived facility designed to prevent foreigners from entering the country. And, as with Rivesaltes, officials have no real plan for what to do with them. Moreover, as historian Terrence Peterson emphasized, Rivesaltes “remained the go-to space for the French government simply because it existed. The infrastructure was in place that allowed the French state to simply shift unwanted populations into a controlled space rather than dealing substantively with changing migration policy or dealing with the human consequences of bad policy.”
While no unified resistance movement opposing the Nazi regime existed, acts of defiance such as sabotage and labour slowdowns took place, as well as attempts to overthrow the regime or assassinate Hitler.[435] The banned Communist and Social Democratic parties set up resistance networks in the mid-1930s. These networks achieved little beyond fomenting unrest and initiating short-lived strikes.[436] Carl Friedrich Goerdeler, who initially supported Hitler, changed his mind in 1936 and was later a participant in the July 20 plot.[437][438] The Red Orchestra spy ring provided information to the Allies about Nazi war crimes, helped orchestrate escapes from Germany, and distributed leaflets. The group was detected by the Gestapo and more than 50 members were tried and executed in 1942.[439] Communist and Social Democratic resistance groups resumed activity in late 1942, but were unable to achieve much beyond distributing leaflets. The two groups saw themselves as potential rival parties in post-war Germany, and for the most part did not co-ordinate their activities.[440] The White Rose resistance group was primarily active in 1942–43, and many of its members were arrested or executed, with the final arrests taking place in 1944.[441] Another civilian resistance group, the Kreisau Circle, had some connections with the military conspirators, and many of its members were arrested after the failed 20 July plot.[442]
From the end of March 1942, Jewish transports from Nazi-ruled countries flowed into Auschwitz. Jews from Slovakia and France were deported there first, followed by Dutch Jews from July 1942, and from August, Jews from Belgium and Yugoslavia. Between October 1942 and October 1944, over 46 000 prisoners were deported from Terezín to Auschwitz. Some of them were put in the „Terezín family camp“ for a temporary period. Throughout 1943, transports were sent to Auschwitz from Germany and other countries in the Nazi sphere of power. The victims of the last great wave of deportations to Auschwitz were the Jews of Hungary, who were deported between May and July 1944.

In most camps, prisoners were forced to wear identifying overalls with colored badges according to their categorization: red triangles for Communists and other political prisoners, green triangles for common criminals, pink triangles for homosexual men, purple triangles for Jehovah's Witnesses, black triangles for asocials and the "work shy", yellow triangle for Jews, and later the brown triangle for Romanis.[30]