The academic phase was during my PhD between 2009 and 2017 in Texas. Upper Caste Hindu professors (2) and fellow grad students and postdocs (2). The professors thankfully weren’t my advisors, but made it their business to pester every Indian student during poster presentations if they found they were not upper caste or weren’t behaving as one (by eating or dating habits).

You can absolutely still report them, if you’re no longer in the university they don’t have much power to influence your career anymore.

I think you might have too much faith in the HR departments of Texas universities :)

UT Southwestern is quite famous for protecting its image at all costs.