Righteous denunciations poured down on a distant, weak, and safely nonwhite target

Significantly, British and French antislavery fervor in the 1860s was directed not at Spain and Portugal, which allowed slavery in their colonies, or at Brazil, with its millions of slaves. Instead, righteous denunciations poured down on a distant, weak, and safely nonwhite target: the so-called Arab slave-traders raiding Africa from the east. In the slave markets of Zanzibar, traders sold their human booty to Arab plantation owners on the island itself, and to other buyers in Persia, Madagascar, and the various sultanates and principalities of the Arabian peninsula. For Europeans, here was an ideal target for disapproval: one "uncivilised" race enslaving another.

A. Hochschild, King Leopold's Ghost (1998, 2006 edition), 28