> I'm Indian so perhaps it is safe for me to use this as a race of choice but what if it were found that Indians actually are less smart than, say, White people

This is an interesting thought experiment.

I'd like to think that if such a thing was discovered, we would investigate why this is the case. I'd like to believe that we wouldn't just accept this as some kind of de-facto truth, and start treating Indians as lesser

I'm an idealist I guess though