Does anyone know how caste discrimination is usually accomplished? Unlike with racism or sexism, the basis of the bigotry shouldn’t be remotely visible, and unlike bigotry based on sexuality or religion, it’s not even determinable from the person’s knowledge: everyone knows what they’re attracted to and their own philosophical views, but almost no-one knows who their great-great-great grandparents were. It seems a curious thing to be bigoted based on something so challenging to assess.