I don't see how this really interacts with the parent comment. In practicality caste has been an immutable construct, and is currently the basis of much discrim

I don't see how this really interacts with the parent comment. In practicality caste has been an immutable construct, and is currently the basis of much discrimination. I don't think anyone is saying that the single defining feature of India is caste. But it is an oddity to see people defend a concept that the vast majority of the world would define as unjust.