Are we all in the same race?

In Sociology we are talking about how the idea of race doesn't exist. How it's a social construct that people have developed over time and visiting different parts of the world. There is no difference biologically between a white man and a man from India. Yes they look different and have different characteristics, but biologically they are the same. The only major thing that varies is their skin color and type of hair. Because of all these differences it has been assumed that these people are of a different race.

I told the people that I sit with in the morning, and they couldn't believe what I was saying. They had always been told that people are catorgorized by different races, when in doubt we are all humans. So this has taught me a lot about race. That we are all people and shouldn't treat each other any different because of the color of our skin. This has taught me a lesson, but maybe the entire world will catch up and be on the same page one day.