But racism? Not only was there plenty of if prior to 1859, and not only has it decreased up until today (yesterday was so-so), but there is no evidence that atheists are more racist than religious people. On the contrary. Tell me honestly: Do you have any trouble thinking of a religious person or society that is deeply racist? How about Abraham's God, for starters (Deuteronomy 7:6)? How about Apartheid?
When the NP came into power in 1948, its primary endeavour was to attain a white supremacist Christian National State and implement racial segregation.On the other hand, evolution has a good scientific explanation (not justification, if you could please make that distinction) for why humans are inherently racist, but it also gives us a good reason why we shouldn't be.
For more on evolution and racism, check out TalkOrigins.org:
Racism is thousands of years older than the theory of evolution, and its prevalence has probably decreased since Darwin's day; certainly slavery is much less now. That is the opposite of what we would expect if evolution promotes racism.