You have to hand it to Rush. He always finds a way to be stupid, crass, and ill-informed. It must take a lot of practice to uncork a doozy like this...
If you happen to be a young kid in junior high or high school, and you're being force-fed evolution, and part of evolution is teaching that the transition from dark skin to light skin equals more evolved, what are you gonna think of dark-skin people?...I'm hearing from people that this is part of the curriculum. Well, if that's true, for crying out loud, then it makes it a little more understandable why people like this Dylann Roof guy exist.
So according to Rush, who is obviously the "go to guy" when it comes to racism in America, it's not the fact that Dylann was enamored with racist websites, or listened to hate-mongers like Glenn Beck or Rush himself, no. It's because a version of evolution that isn't actually taught in any school is responsible. Because evolution doesn't teach what Rush says it does. That sort of "evolution" is the stock and trade of the white supremacy movement. Actual evolution tells us that folks in Africa kept evolving and not surprisingly have more genetic diversity than the rest of the population. Kind of the opposite of what Limpballs says.
So Rush, give yourself a big old Nazi salute and shut the fuck up!