It is popular (and supported by many governments) to divide mankind into many little groups. The names and the definitions of the groups continually change. "Race" has long been a popular way of grouping people. The definition of "race" is indefinite and blurry. Even the names of "races" continually change. For example, we have the "colored", "negro", "black", Afro-American".
The difference between "races" is often trite or unmeasurable. There are many "black" people who have lighter skin than some "white" people. Actually there are more differences between members of a "race" than between "races"! A woman may be five feet tall, weigh 100 pounds, and have blue eyes while her brother is seven feet tall, has brown eyes, weighs 350 pounds, and wishes he could have some of his sister's hair for his bald head.
To further confuse things, we have "ethnic" groups. An "Ethnic" group is a group with common upbringing. The "common upbringing" may simply mean they grew up on the same block. Someone from another country usually can't tell the difference unless one group wears a sign around their neck.
Reality is that there is only ONE homo sapiens.
The bickering between groups is much like the bickering between groups of little kids on a playground. One group has "White Sox" baseball caps and the other group has another team on their caps.
The bottom line is that it's what's inside a person that counts. God made each of us as an individual. He doesn't measure our worth by what kind of funny hat we have on or what color our shirt is. He measures us by what we are inside. We should do the same.