Here is your assignment for today - look up Mizoram, Meghalaya, Nagaland, Assam, Arunachal Pradesh, Tripura and Sikkim. The people from those states are ethnically from the Tibetan family, which here your type calls Asian. There are also Anglo-Indians (like Russel Peters) who are from mixed European and Indian heritages. There are Siddis who are black Africans, and aboriginals in the Andaman and Nicobar islands, who are related to the aboriginals in Australia. 

I think that covers the major ethnic groups. I am guessing your knowledge of India is less than my knowledge of neurosurgery. Except that I don't think I am qualified to make comments on neurosurgery, while you think you can make (fairly uninformed) comments on India. 

Like they say, a little knowledge is a dangerous thing. You are a awesome example of that.