No, I intentionally used the word race instead of ethnicity. I’m well aware that India is diverse and has thousands of ethnic groups. I used race because many of these groups still share many phenotypical characteristics. In places like America there is more of a physical distinction between people of different races.
So, it’s interesting to me that humans can find ways to discriminate even when they look similar (or at least more similar than some other countries). This is probably not even unique to India. I’m sure other racially homogeneous nations experience similar types of discrimination that isn’t obvious to outsiders.