The fact that scientists and intellectuals can't wrap their head around the idea that biology would play a major role in intelligence and that this would ultimately cause differences in groups goes to show you how most people in these communities are not as intelligent or open minded as they think they are. A basic understanding of biology and evolution would tell you that this it is probably the case that genes play a role in intelligence and that there would also be race differences before you even look at the data and research that experts have done.