Race in a nutshell.

In essence there are no races between humans.  

 

Race used to be the tribe down the river, then the next region or nation, later the next people with common looks, then the next continent or wherever difference is great for the recent bigot.

Now it's a world away, as genetic commonality means that scientifically an alien from another world with no shared history is the true alien or race apart from why evolving Earthlings.

Turns out the idea of race at a real level due to our shared heritage is best argued as not between people but between separate abiogenesis and evolution.  Alternatively, the Darwinian version is one regarding species and not ethnic type, survival of race of people being far from scientific reasoning. Ethnicity being very grey, with every one of you being a mongrel, and so at best race is a belief based on data before modern knowledge, such as genetics. 

 

 So, as I said, there are no races between humans.  Or so it would be, if not for common ignorance and ideology based reasoning, the unequality in various cases, and so race beyond reason is a continuing irrationality.