What does it mean that race is “socially constructed”?

Question

What does it mean that race is “socially constructed”?

In: Other

Answer 1

>ELI5: What does it mean that race is “socially constructed”?

I have a question based on observation.

The observation:

If there is a large pasture than enables livestock to spread out comfortably, and there are two different horse breeds like Arabians and Thoroughbred, those horses will form two loose groups based on their breed. (I’ve seen this in other animals as well…cattle, dogs,, and birds, for instance.)

This separation didn’t seem to be an aversion of one group toward the other but rather an attraction to their own breed–a preference for the familiar.

Would this behavior also be called or labeled “racism?”