It has been alleged that the president of Argentina from 1868 to 1874, Domingo Faustino Sarmiento, sought to wipe out blacks from the country in a policy of covert genocide through extremely repressive policies (including possibly the forced recruitment of Africans into the army and by forcing blacks to remain in neighborhoods where disease would decimate them in the absence of adequate health care).
But blacks did not really vanish from Argentina – despite attempts by the government to eliminate them (partially by encouraging large-scale immigration in the late 19th and 20th century from Europe and the Near East). Rather, they remain a hidden and forgotten part of Argentine society.
Ironically, Argentina’s most famous cultural gift to the world – the tango – came from the African influence. The first paintings of people dancing the tango are of people of African descent.