I have spoken of the connection between secular scientific polygenism and racialist theories in the past to caution those who believe that "progress" and "secularism" are always on the side of the right (in hindsight). But, I didn’t know that some mainstream Creationists also espouse some racialist thinking (Mormon racism is a well known historical fact that is played up by evangelical Christians of of the Trinitarian and Apostolic tradition). This all goes to show you that the arrow of causation does not flow in the direction that propogandists assert-I doubt that Christian and secular racists were racists because of Christianity or secularism, rather, they simply incorporated pre-existing racism into their paradigms. This suggests that we should be skeptical of attempts to smear any ideology with racism unless it is explicitly racialist as a point of principle. The American Left attempts to do this to the Right (based on the known historical record) and conversely the Right attempts to tarnish the Left in a like manner (often based on connections less well known, though just as contemporaneously tenditioius). In the end, it has debased and devalued the term racist, one of the many words rendered dull & useless by overuse, joining the long list along with heretic, fascist, communist and bigot. These words have become generously utilitized tactical weapons in every private battle, rather than sparingly deployed strategic armourments in public wars.
fn1. Note that I do not object to the assertion that various "races" might have different average phenotypes (physical and behavioral) rather, I object to the moralistic assertion that the God had decreed that the descendents of Ham-"all of the earth’s ‘colored’ races,–yellow, red, brown, and black–essentially the Afro-Asian group of peoples" serve the descendents of Shem and Japeth. This descendent of Ham (by the above definition) does not serve God or man by anyone’s decree.