The US is quite large so this is a YMMV thing. I solve this issue by just not associating very much with my ex-countrymen. I get enough of them when I go to visit my parents, I don't need to constantly mingle with more Indians. I have a solid set of diverse friends (one or two are Indian).
It helps that in my workplace I tend not to think of anyone as a 'friend' and just keep my interactions professional.
I guess the works for all kinds of cases of discrimination.
UT Southwestern is quite famous for protecting its image at all costs.
When I was a child there were a lot of scandals about girls disappearing from school because they were married off to a cousin back in Morocco.
You think teaching them that it's wrong to discriminate based on caste is a step on "a rather steep slippery slope towards" genocide??
And because I know people will wonder: no, I am not Indian and know very little about caste so you can rest assured this isn't a biased response.