Creationists and their idiocies:

What Is Racism?

[…]

The biblical truth is that all humans come from Adam, and all humans come from Noah. As C.S. Lewis might say, that is grand enough to exalt any person, and humble enough to remind anyone that we are but dust. One of the most important features of racism, then, is either a partial or full denial of this fundamental truth. This goes a long way towards a definition. If we are not all from the same origin, then we have room to claim that one race is superior to another. This is one of the biggest problems with the theory of multiple origins of the human race. Evolution and the denial of the historical Adam will have racism as its intended or unintended consequence. Ben Stein showed this quite eloquently in his movie “Expelled,” which you should see if you haven’t yet. […]

[…] The flip side of this adaptive characteristic is the very pale complexion of Norwegians. They adapted to their frigid climate in the opposite way. If lots of Africans migrated to Norway, over a period of a few hundred years, their skin would lighten quite noticeably. Similarly, if the Norwegian migrated to Africa, his skin would darken quite a bit just in his own lifetime. […]