project to debunk racist theories had been attempted in the mid-1930s. However, this project had been abandoned. Thus, in 1950, UNESCO declared that it had resumed: ...up again, after a lapse of fifteen years, a project that the International Committee on Intellectual Cooperation has wished to carry through but that it had to abandon in deference to the appeasement policy of the pre-war period. The race question had become one of the pivots of Nazi ideology and policy. Masaryk and Beneš took the initiative of calling for a conference to re-establish in the minds and consciences of men everywhere the truth about race ... Nazi propaganda was able to continue its baleful work unopposed by the authority of an international organisation. The Third Reich's racial policies, its eugenics programs and the extermination of Jews in the Holocaust, as well as the Romani people in the Porrajmos (the Romani Holocaust) and others minorities led to a change in opinions about scientific research into race after the war. Changes within scientific disciplines, such as the rise of the Boasian school of anthropology in the United States contributed to this shift. These theories were strongly denounced in the 1950 UNESCO statement, signed by internationally renowned scholars, and titled The Race Question. Polygenism and racial typologies Works such as Arthur de Gobineau's An Essay on the Inequality of the Human Races (1853–1855) may be considered one of the first theorizations of this new racism, founded on an essentialist notion of race, which opposed the former racial discourse, of Boulainvilliers for example, which saw in races a fundamentally historical reality, which changed over time. Gobineau, thus, attempted to frame racism within the terms of biological differences among humans, giving it the legitimacy of biology. Gobineau's theories would be expanded in France by Georges Vacher de Lapouge (1854–1936)'s typology of races, who published in 1899 The Aryan and his Social Role, in which he claimed that the white "Aryan race" "dolichocephalic", was opposed to the "brachycephalic" race, of whom the "Jew" was the archetype. Vacher de Lapouge thus created a hierarchical classification of races, in which he identified the "Homo europaeus (Teutonic, Protestant, etc.), the "Homo alpinus" (Auvergnat, Turkish, etc.), and finally the "Homo mediterraneus" (Neapolitan, Andalus, etc.) He assimilated races and social classes, considering that the French upper class was a representation of the Homo europaeus, while the lower class represented the Homo alpinus. Applying