(1) A recent National Geographic program, I believe, which concerned itself with a rather large group of Mexican people who possessed a gene responsible for an exuberance of facial hair. The net result was a colony of people resembling Lon Chaney's Wolf Man.
(2) The documentation of a tribe of split-toed Black Africans, whose feet resemble those found on the larger birds.
(3) The Hotentots, of which the female genitalia is so hideous that it would turn a normal man into a monk. (I posted an anthropologist's drawings once, but was asked to withdraw them because they were so disgusting.)
If race-mixers are not to be hypocrites, I fully expect them to grab the next flight to the region of their choice, and engage posthaste in the orgies they so champion.