Wikisnip of the day: "The baskets of severed hands, set down at the feet of the European post commanders, became the symbol of the Congo Free State. ... The collection of hands became an end in itself. ''Force Publique'' soldiers brought them to the stations in place of rubber; they even went out to harvest them instead of rubber... They became a sort of currency."

(Those years were the subject of Heart of Darkness (full text at wikisource), which inspired Apocalypse Now.)