The Nazi Party adopted and developed several pseudoscientific racial classifications as part of its ideology (Nazism) in order to justify the genocide of groups of people which it deemed racially inferior. The Nazis considered the putative "Aryan race" a superior "master race", and they considered black people, mixed-race people, Slavs, Roma, Jews and other ethnicities racially inferior "sub-humans", whose members were only suitable for slave labor and extermination. These beliefs stemmed from a mixture of 19th-century anthropology, scientific racism, and anti-Semitism. The term "Aryan" belongs in general to the discourses of Volk (the people as a lineage group sharing a territory, language, and culture).
The Nazis claimed to observe a strict and scientific hierarchy of the human race. Adolf Hitler's views on race and people are found throughout his autobiographical manifesto book Mein Kampf but more specifically, they are found in chapter 11, the title of which is "Nation and Race". The standard-issue propaganda text which was issued to members of the Hitler Youth contained a chapter on "The German Races" that heavily cited the works of Hans F. K. Günther. The text seems to address the European races in descending orders in the Nazi racial hierarchy: the Nordic (including the Phalic sub-race), Mediterranean, Dinaric, Alpine, and East Baltic races. In 1937, Hitler spoke in the Reichstag and declared, "I speak prophetically. Just as the discovery that the earth moved around the sun led to a complete transformation of the way people looked at the world, so too the blood and racial teachings of National Socialism will change our understanding of mankind's past and its future."
Nordic Indo-Germanic People
In his speeches and writings, Hitler referred to the supposed existence of an "Aryan race", a race that he believed founded a superior type of humanity. According to Nazi ideology, the purest stock of Aryans were the Nordic people of Germany, England, the Netherlands, and Scandinavia.