Some master-level mental acrobatics I assume? Because, if you work really hard to convince yourself, a caste is neither race (at least for white folks, all castes are Indian aren't they), nor Religion (they are all Hindu, right?) or sex (as long as you don't distinguish between men and women). So everything is fine, and we (HR), don't have to do anything, case closed, back to lunch.
Happy to see the thing blowing up, so.
EDIT: Fixed Hindi to Hindu