Scientific racism in the context of Craniometry

Racism is the belief that groups of humans possess different behavioral traits corresponding to inherited attributes and can be divided based on the superiority of one race or ethnicity over another. It may also mean prejudice, discrimination, or antagonism directed against other people because they are of a different ethnic background. Modern variants of racism are often based in social perceptions of biological differences between peoples. These views can take the form of social actions, practices or beliefs, or political systems in which different races are ranked as inherently superior or inferior to each other, based on presumed shared inheritable traits, abilities, or qualities. There have been attempts to legitimize racist beliefs through scientific means, such as scientific racism, which have been overwhelmingly shown to be unfounded. In terms of political systems (e.g. apartheid) that support the expression of prejudice or aversion in discriminatory practices or laws, racist ideology may include associated social aspects such as nativism, xenophobia, otherness, segregation, hierarchical ranking, and supremacism.

While the concepts of race and ethnicity are considered to be separate in contemporary social science, the two terms have a long history of equivalence in popular usage and older social science literature. "Ethnicity" is often used in a sense close to one traditionally attributed to "race", the division of human groups based on qualities assumed to be essential or innate to the group (e.g., shared ancestry or shared behavior). Racism and racial discrimination are often used to describe discrimination on an ethnic or cultural basis, independent of whether these differences are described as racial. According to the United Nations's Convention on the Elimination of All Forms of Racial Discrimination, there is no distinction between the discrimination resulting from either basis of race or ethnicity, but that the terms do have different meanings that may not always coincide. It further concludes that superiority based on racial differentiation is scientifically false, morally condemnable, socially unjust, and dangerous. The convention also declared that there is no justification for racial discrimination, anywhere, in theory or in practice.

Hamites is the name formerly used for some Northern and Horn of Africa peoples in the context of a now-outdated model of dividing humanity into different races; this was developed originally by Europeans in support of colonialism and slavery. The term was originally borrowed from the Book of Genesis, in which it refers to the descendants of Ham, son of Noah.

The term was originally used in contrast to the other two proposed divisions of mankind based on the story of Noah: Semites and Japhetites. The appellation Hamitic was applied to the Berber, Cushitic, and Egyptian branches of the Afroasiatic language family, which, together with the Semitic branch, was formerly labelled "Hamito-Semitic". Because the three Hamitic branches have not been shown to form an exclusive (monophyletic) phylogenetic unit of their own, separate from other Afroasiatic languages, linguists no longer use the term in this sense. Each of these branches is instead now regarded as an independent subgroup of the larger Afroasiatic family.

Nazism (/ˈnɑːtsiɪzəm, ˈnæt-/ NA(H)T-see-iz-əm), formally named National Socialism (NS; German: Nationalsozialismus, German: [natsi̯oˈnaːlzotsi̯aˌlɪsmʊs] ), is the far-right totalitarian ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Germany. During Hitler's rise to power, it was frequently called Hitler Fascism and Hitlerism. The term "neo-Nazism" is applied to far-right groups formed after World War II with similar ideology.

Nazism is a form of fascism, with disdain for liberal democracy and the parliamentary system. Its beliefs include support for dictatorship, fervent antisemitism, anti-communism, anti-Slavism, anti-Romani sentiment, scientific racism, anti-Chinese sentiment, white supremacy, Nordicism, social Darwinism, homophobia, ableism, and eugenics. The Nazis' ultranationalism originated in pan-Germanism and the ethno-nationalist Völkisch movement, which had been prominent within German ultranationalism since the late 19th century. Nazism was influenced by the Freikorps paramilitary groups that emerged after Germany's defeat in World War I, from which the party's "cult of violence" came. It subscribed to pseudo-scientific theories of a racial hierarchy, identifying ethnic Germans as part of what the Nazis regarded as a Nordic Aryan master race. Nazism sought to overcome social divisions and create a homogeneous German society based on racial purity. The Nazis aimed to unite all Germans living in historically German territory, gain lands for expansion under the doctrine of Lebensraum, and exclude those deemed either Community Aliens or "inferior" races (Untermenschen).

Joseph Ernest Renan (/rəˈnɑːn/; French: [ʒozɛf ɛʁnɛst ʁənɑ̃]; 27 February 1823 – 2 October 1892) was a French Orientalist and Semitic scholar, writing on Semitic languages and civilizations, historian of religion, philologist, philosopher, biblical scholar, and critic. He wrote works on the origins of early Christianity, and espoused popular political theories especially concerning nationalism, national identity, and the superiority of White people over other human races. Renan is among the first scholars to advance the debunked Khazar theory, which held that Ashkenazi Jews were descendants of the Khazars, Turkic peoples who had adopted the Jewish religion and allegedly migrated to central and eastern Europe following the collapse of their khanate. On this basis he alleged that the Jews were "an incomplete race."

Physiognomy or face reading, sometimes known by the later term anthroposcopy, is the practice of assessing a person's character or personality from their outer appearance—especially the face. The term physiognomy can also refer to the general appearance of a person, object, or terrain without reference to its implied characteristics—as in the physiognomy of an individual plant (see plant life-form) or of a plant community (see vegetation).

Physiognomy as a practice meets the contemporary definition of pseudoscience and is regarded as such by academics because of its unsupported claims; popular belief in the practice of physiognomy is nonetheless still widespread and modern advances in artificial intelligence have sparked renewed interest in the field of study. The practice was well-accepted by ancient Greek philosophers, but fell into disrepute in the 16th century while practised by vagabonds and mountebanks. It revived and was popularised by Johann Kaspar Lavater, before falling from favour in the late 19th century. Physiognomy in the 19th century is particularly noted as a basis for scientific racism. Physiognomy as it is understood today is a subject of renewed scientific interest, especially as it relates to machine learning and facial recognition technology. The main interest for scientists today are the risks, including privacy concerns, of physiognomy in the context of facial recognition algorithms.

The concept of race as a categorization of anatomically modern humans (Homo sapiens) has an extensive history in Europe and the Americas. The contemporary word race itself is modern; historically it was used in the sense of "nation, ethnic group" during the 16th to 19th centuries. Race acquired its modern meaning in the field of physical anthropology through scientific racism starting in the 19th century. With the rise of modern genetics, the concept of distinct human races in a biological sense has become obsolete. The American Anthropological Association's 1998 "Statement on Race" outlined race as a social construct, not biological reality. In 2019, the American Association of Biological Anthropologists stated: "The belief in 'races' as natural aspects of human biology, and the structures of inequality (racism) that emerge from such beliefs, are among the most damaging elements in the human experience both today and in the past."

Monogenism or sometimes monogenesis is the theory of human origins which posits a common descent for all humans. The negation of monogenism is polygenism. This issue was hotly debated in the Western world in the nineteenth century, as the assumptions of scientific racism came under scrutiny both from religious groups and in the light of developments in the life sciences and human science. It was integral to the early conceptions of ethnology.

Modern scientific views favor this theory, with the most widely accepted model for human origins being the "Out of Africa" theory.

A racial hierarchy is a system of stratification that is based on the pseudoscientific belief that some racial groups are superior to other racial groups. At various points of history, racial hierarchies have featured in societies, often being formally instituted in law, such as in the Nuremberg Laws in Nazi Germany. Generally, those who support racial hierarchies believe themselves to be part of the putative 'superior' race and base their supposed superiority on pseudo-biological, cultural or religious arguments. However, systems of racial hierarchy have also been widely rejected and challenged, and many, such as Apartheid have been abolished. The abolition of such systems has not stopped debate around racial hierarchy and racism more broadly.

Social degeneration was a widely influential concept at the interface of the social and biological sciences in the 18th and 19th centuries. During the 18th century, scientific thinkers including Georges-Louis Leclerc, Comte de Buffon, Johann Friedrich Blumenbach, and Immanuel Kant argued that humans shared a common origin but had degenerated over time due to differences in climate. This theory provided an explanation of where humans came from and why some people appeared differently from others. In contrast, degenerationists in the 19th century feared that civilization might be in decline and that the causes of decline lay in biological change. These ideas derived from pre-scientific concepts of heredity ("hereditary taint") with Lamarckian emphasis on biological development through purpose and habit. Degeneration concepts were often associated with authoritarian political attitudes, including militarism and scientific racism, and a preoccupation with eugenics. The theory originated in racial concepts of ethnicity, recorded in the writings of such medical scientists as Johann Blumenbach and Robert Knox. From the 1850s, it became influential in psychiatry through the writings of Bénédict Morel, and in criminology with Cesare Lombroso. By the 1890s, in the work of Max Nordau and others, degeneration became a more general concept in social criticism. It also fed into the ideology of ethnic nationalism, attracting, among others, Maurice Barrès, Charles Maurras and the Action Française. Alexis Carrel, a French Nobel Laureate in Medicine, cited national degeneration as a rationale for a eugenics programme in collaborationist Vichy France.

The meaning of degeneration was poorly defined, but can be described as an organism's change from a more complex to a simpler, less differentiated form, and is associated with 19th-century conceptions of biological devolution. In scientific usage, the term was reserved for changes occurring at a histological level – i.e. in body tissues. Although rejected by Charles Darwin, the theory's application to the social sciences was supported by some evolutionary biologists, most notably Ernst Haeckel and Ray Lankester. As the 19th century wore on, the increasing emphasis on degeneration reflected an anxious pessimism about the resilience of European civilization and its possible decline and collapse.

White supremacy is the belief that white people are superior to those of other races. The belief favors the maintenance and defense of any power and privilege held by white people. White supremacy has roots in the now-discredited doctrine of scientific racism and was a key justification for European colonialism.

As a political ideology, it imposes and maintains cultural, social, political, historical or institutional domination by white people and non-white supporters. In the past, this ideology had been put into effect through socioeconomic and legal structures such as the Atlantic slave trade, European colonial labor and social practices, the Scramble for Africa, Jim Crow laws in the United States, the activities of the Native Land Court in New Zealand, the White Australia policies from the 1890s to the mid-1970s, and apartheid in South Africa. This ideology is also today present among neo-Confederates.

The German Nazi Party adopted and developed several racial hierarchical categorizations as an important part of its racist ideology (Nazism) in order to justify enslavement, extermination, ethnic persecution and other atrocities against ethnicities which it deemed genetically or culturally inferior. The Aryan race is a pseudoscientific concept that emerged in the late-19th century to describe people who descend from the Proto-Indo-Europeans as a racial grouping and it was accepted by Nazi thinkers. The Nazis considered the putative "Aryan race" a superior "master race" with Germanic peoples as representative of the Nordic race being the best branch, and they considered Jews, mixed-race people, Slavs, Romani, black people, and certain other ethnicities racially inferior subhumans, whose members were only suitable for slave labor and extermination. In these ethnicities, Jews were considered the most inferior. However, the Nazis considered Germanic peoples such as Germans to be significantly mixed between different races, with the East Baltic race being considered inferior by the Nazis, and that their citizens needed to be completely Nordicized after the war. The Nazis also considered some non-Germanic groups such as Sorbs, Northern Italians, and Greeks to be of Germanic and Nordic origin. Some non-Aryan ethnic groups such as the Japanese were considered to be partly superior, while some Indo-Europeans such as Slavs, Romani, and Indo-Aryans were considered inferior.

These beliefs stemmed from a mixture of historical race concepts, 19th-century and early 20th century anthropology, 19th-century and early 20th-century biology, racial biology, white supremacism, notions of Aryan racial superiority, Nordicism, social Darwinism, German nationalism, and antisemitism with the selection of the most extreme parts. They also originated from German military alliance needs. The term Aryan generally originated during the discourses about the use of the term Volk (the people constitute a lineage group whose members share a territory, a language, and a culture). Unlike the German armed forces (Wehrmacht) only used for military conflicts, the Schutzstaffel (SS) was a paramilitary organization directly controlled by the Nazis with absolute compliance with Nazi racial ideology and policies.

The racial policy of Nazi Germany was a set of policies and laws implemented in Nazi Germany under the dictatorship of Adolf Hitler, based on pseudoscientific and racist doctrines asserting the superiority of the putative "Aryan race", which claimed scientific legitimacy. This was combined with a eugenics program that aimed for "racial hygiene" by compulsory sterilization and extermination of those whom they saw as Untermenschen ("sub-humans"), which culminated in the Holocaust.

Nazi policies labeled centuries-long residents in German territory who were not ethnic Germans such as Jews (which in Nazi racial theory were emphasized as a Semitic people of Levantine origins), Romani (an Indo-Aryan people originating from the Indian subcontinent), along with the vast majority of Slavs (mainly ethnic Poles, Serbs, Ukrainians, Russians, Belarusians, etc.), and most non-Europeans as inferior non-Aryan subhumans (under the Nazi appropriation of the term "Aryan") in a racial hierarchy that placed the Herrenvolk ("master race") of the Volksgemeinschaft ("people's community") at the top.

Nam tiến (Vietnamese: [nam tǐən]; chữ Hán: 南進; lit. "southward advance" or "march to the south") is a historiographical concept that describes the historic southward expansion of the territory of Vietnamese dynasties' dominions and ethnic Kinh people (Đại Việt) from the 11th to the 19th centuries. The concept of Nam tiến has differing interpretations, with some equating it to Vietnamese colonization of the south and to a series of wars and conflicts between several Vietnamese dynasties and Champa Kingdoms, which resulted in the annexation and Vietnamization of the former Cham states as well as indigenous territories. The nam tiến became one of the dominant themes of the narrative that Vietnamese nationalists created in the 20th century, alongside an emphasis on non-Chinese origin and Vietnamese homogeneity. Within Vietnamese nationalism and Greater Vietnam ideology, it served as a romanticized conceptualization of the Vietnamese identity, especially in South Vietnam and modern Vietnam.

The Vietnamese domain gradually expanded from its original heartland in the Red River Delta into southern territories, which were controlled by the Champa kingdoms. In a span of some 700 years, the Vietnamese domain tripled the area of its territory and more or less acquired the elongated shape of modern-day Vietnam. Beginning in the 20th century, modern Vietnamese historiography, under the auspices of nationalism and racialism, coined the term Nam tiến for what they believed to be a gradual, inevitable southern expansion of Vietnamese domains. According to the 20th-century Vietnamese scholars who constructed the Nam tiến as a continuous historical phenomenon, the 11th to the 14th centuries saw battle gains and losses as frontier territory changed hands between the Viet and the Chams during the early Cham–Viet wars. In the 15th, 16th and 17th centuries, following the Fourth Chinese domination of Vietnam (1407–1427), the Vietnamese defeated the less centralized state of Champa and seized its capital in the 1471 Cham–Vietnamese War. From the 17th to the 19th centuries, Vietnamese settlers penetrated the Mekong Delta. The Nguyễn lords of Huế wrested the southernmost territory from Cambodia by diplomacy and by force, which completed the "March to the South".

Nordicism is a racialist ideology which views the "Nordic race" (an archaic race concept) as an endangered and superior racial group. Some notable and influential Nordicist works include Madison Grant's book The Passing of the Great Race (1916); Arthur de Gobineau's An Essay on the Inequality of the Human Races (1853); the various writings of Lothrop Stoddard; Houston Stewart Chamberlain's The Foundations of the Nineteenth Century (1899); and, to a lesser extent, William Z. Ripley’s The Races of Europe (1899). The ideology became popular in the late-19th and 20th centuries in Germanic-speaking Europe, Northwestern Europe, Central Europe, and Northern Europe, as well as in North America and Australia.

The belief that Nordic ancestry is superior to all others was originally embraced as "Anglo-Saxonism" in England and the United States, "Teutonicism" in Germany, and "Frankisism" in Northern France. The notion of the superiority of the "Nordic race" and the superiority of the Northwestern European nations that were associated with this supposed race influenced the United States' Immigration Act of 1924 (which effectively banned or severely limited the immigration of Jews, Italians, and other Southern and Eastern Europeans) and the later Immigration and Nationality Act of 1952, and it was also present in other countries outside Northwestern Europe and the United States, such as Australia, Canada, and South Africa. By the 1930s, the Nazis claimed that the Nordic race was the most superior branch of the "Aryan race" and constituted a master race (Herrenrasse). The full application of this belief system—the invasion of Poland and further conquest in the pursuit of Lebensraum, 'living space'—was the immediate catalyst for World War II and led directly to the industrial mass murder of 6 million Jews in what is now known as the Holocaust.