I am apt to suspect the negroes, and in general all other species of men (for there are four or five different kinds) to be naturally inferior to the whites. There never was a civilized nation of any other complexion than white, nor even any individual eminent either in action or speculation. No ingenious manufacturers amongst them, no arts, no sciences. In Jamaica indeed they talk of one negro as a man of learning; but 'tis likely he is admired for very slender accomplishments, like a parrot, who speaks a few words plainly.- David Hume, Of National Characters
Mr. Hume challenges anyone to cite a simple example in which a negro has shown talents, and asserts that among the hundreds of thousands of blacks who are transported elsewhere from their countries, although many of them have even been set free, still not a single one was ever found who presented anything great in art or science or any other praiseworthy quality, even through superior gifts earn respect in the world. So fundamental is the difference between the two races of man, and it appears to be as great in regard to mental capacities as in color.- Immanuel Kant, Observations on the Feeling of the Beautiful and Sublime
My point? The perceived value of pigmentation and class can cause one to destroy the lives of thousands of people. This is most certainly a tragedy...but should an entire economy suffer?