American blacks are prone to health issues.
Norwegian isn't a race, neither is Arian, the average height would have many things as an aggregate which affect it. Like French men being shorter after Napoleon's reign because all the tall ones were in the front of the battle lines. That issue has now past into history, but pre WWII was a basic thing. In general the French were shorter than the rest of Europe.
As humans we have norms, and we have outliers.
Please stop picking on my words. What I meant was there can be large differences in people specific to certain places. We have already confirmed there is no basis to the BBC trope, but what I am getting at is that not everyone is automatically racist.