Thanks to US immigration policy and the forward progression of time, there are many people, white and otherwise, who now live in America and can legitimately claim that they had absolutely nothing to do with the injustices of slavery and Jim Crow, because they weren’t here while these things were going on and aren’t related to anyone who was. So, there needs to be a myth that proves that racism is just part of man’s fallen nature. The Old Testament has Eve eating the fruit of the Tree of Knowledge; Science™ has the Implicit Association Test.
There are actually multiple Implicit Association Tests (you can try them out here, if you like), but the first one is the “Race IAT”, which claims to show that Americans implicitly associate “European Americans” with “Good concepts” and “African Americans” with “Bad concepts.”
I took two of these tests. Basically, the results simply measured my response time. Since I’m right-handed, my right-hand response times (faster) showed I’m a racist. Hardly scientific.