>>7
It's not a social construct.
There is more genetic difference between White Europeans and Sub-Saharan Africans than between White Europeans and Neanderthal--and we consider Neanderthal to be a different species altogether.
Sub-Saharan Africans are a different species from White Europeans, and vice versa.
White Europeans, Caucasians, Asians, and North American Natives are all divergent Cro-Magnon/Neanderthal hybrids.
http://www.sciencemag.org/content/328/5979/710.full
Africans are various divergent hybridizations of Cro-Magnon and another as yet undetermined archaic hominid species, the result of a back-migration into Africa.
http://www.pnas.org/content/108/37/15123
South-East Asians, Melanesians, and Australian Aborigine are Cro-Magnon/Neanderthal/Denisova Hominin hybrids.
http://www.cell.com/AJHG/retrieve/pii/S0002929711003958
There is no such thing as a single human race, there is no such thing as a pure human lineage, and there is no such thing as racial equality.
Anyone saying that race/speciation is a social construct are either mixed-breeds suffering from an identity crisis, self-hating blacks who hate whites, guilt-ridden whites who hate whites, or Jews who hate non-Jews.