My understanding is that non-Indians are simply outside the caste system entirely. So to the extent that there are Indians who view themselves as better than non-Indians, that's less caste discrimination and more good old fashioned racism.
Do you know of any Indians who treat all non-Indians as inferior? My understanding is that non-Indians are judged based on their skin color. That is most certainly racism, but not based on nationality.
Another thing that puzzles me is how you differentiate caste discrimination from racism. The underlying motivations are different. But the treatment, politics and tactics used are almost the same in both cases. I'm curious about your perspective on these.
Personally I think they're the same - equally abhorrent, and people who act that way should be shunned from the industry entirely (there's a comment I made I think a week ago saying basically the same thing).
Legally though, racism == illegal discrimination while caste discrimination == legal discrimination.
