How many races are there?

Answer 1

There is just 1 race : the Human Race !

Thank you for the above answer which was meant to be taken tongue-in-cheek.

There are only four main races in the world but several sub races and mixed races;

Caucascoid, Negroid, Mongoloid and Austroloid.

Two of them are labeled by their skin color and its culturally acceptable throughout the world as in, The Whites or The Blacks. The other nationalities find it highly offensive, culturally unaceptable and some may say vulgar to address someone as a red skin, yellow, skin, or brown skin. Describing skin color is appropriate in an educational atmosphere such as this one.

Racial slurs have also been around for thousands of years and is also considered in most cultures as highly offensive, fecesious and yes vulgar. The White race however have tended not be offended so much by their racial slurs. Many actually use the terms in a humorous sense such as honky,cracker, white trash, etc.