Nigger singers with their faces blacked singing minstrel songs. In the song "", the Mikado sings of the punishment for older women who dye their hair or wear corsets, to be "Blacked like a nigger/With permanent walnut juice." Both lyrics are usually changed for modern performances. The word "nigger" appears in children's literature. "How the Leopard Got His Spots", in the "Just So Stories" (1902) by Rudyard Kipling, tells of an Ethiopian man and a leopard, both originally sand-colored, deciding to camouflage themselves with painted spots, for hunting in tropical forest. The story originally included a scene wherein the leopard (now
Who We Are and How We Got Here criticised for its writing style and its handling of race, though other reviewers observe that nothing it says should give racists any comfort. David Reich is a geneticist who has studied ancient human genomes, comparing their patterns of mutations to discover which populations migrated and mixed throughout prehistory. He was mentored by the population geneticist Luca Cavalli-Sforza, who from 1960 pioneered the attempt to match the study of human prehistory by archaeology and linguistics, using the limited genetic data available at that time. "Who We Are and How We Got Here" was published by Oxford University Press in 2018, .