I’ve even had other Indian employees complain about caste hiring practices.
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I even remember there was some lawsuit, claiming job discrimination of lower caste Indians (Dalits?) in the US companies.
The Indians I knew, were almost all from the highest caste (brahmins), few from the second highest caste.
Nobody below that!
I saw an h-1b get laid off and replaced by another h-1b. That is how screwed up this whole thing has become.