I'm not in favor of preventing anyone from speaking. I started this by seconding parent's point that a lot of times it's better to move on with making a success of life and not know or not focus on the potential motivation of people who might be quietly discriminating against you.
FWIW, that wasn't the implication I got from this:
> So sure: Introduce new ways that people can feel like they've been discriminated against. That's the way it's done! More and more identity groups! Caste, why not? Hey, we can even celebrate it.
That sounded pretty unconditionally dismissive of the issue under discussion. I'm happy you've moderated your tone.
So... how do you square that with preventing a caste bias activist from speaking at Google? What Soundararajan does is quite literally speaking up against people who don't treat others equally.