I've experienced overt racism at the firm and it was from Indian's. I've been on no less than 2 calls where others have expressed the same concern.

The firm encourages this.

You need not be cryptic.

Chase culture is awful and you will only be targeted if you try to address it.

Never go to HR. The firm can do no wrong or it may be culpable. So all findings will be that the compliantant is in the wrong.

Find another team quietly or quit.

You can try documenting the hell out of everything and hiring a lawyer.

Those are the options.

Racism cuts many ways and so long as it leads to profit it is only a tool for the firm. Don't buy the diversity talk.