[John H K]

Not to mention North African Arabs, such as Moussaoui, many of whom look essentially identical to American Blacks...Moussaoui is the spitting image of former NBA Center Moses Malone.

[Age of Reason]

John, the reason people have historically been wary of others who do not look like them or speak like them, is possibly a fit evolutionary adaptation; such a reaction would have enabled a member of one group to instantly recognize an outsider--without the need for a compterized Tribal ID card.