Duk Warsa 1906, kerdil Kongo Ota Benga kagenahang olih antropolog Amerika  Madison Grant ring tengah kandang ring kebun bintang Bronx, kaicen bantang utawi label "mata rantai sane ical" inggih punika irengan (orang utan) miwah "ras kulit putih" - Grant, pinaka ahli eugenika sane sampun kaloktah, taler sang sane nyurat utawi penulis The Passing of the Great Race (1916).