Ken,
I see this type of argument a lot, but it really doesn’t hold any water. Carl Linnaeus, writing in 1735 (over 100 years prior to On The Origin of Species) divided humanity into four races - whitish, reddish, tawny, and blackish - with notes about the temperament and ingenuity of each. I think the collapsing of humanity into these broad groups was an enlightenment thing, but it wasn’t based on evolutionary reasoning. If you read ancient Roman or Chinese accounts of people they encounter on their borders the descriptions are full of discussion of those groups in language that we would consider highly racially charged. It is simply obvious that genetically distinct people have different phenotypes, and due to cultural isolation these phenotypes are often correlate with distinct cultural practices. People have always noticed.
These differences don’t justify racial animosity, vainglory, or preferential treatment, but I don’t think it helps to deny their existence.