HN does have such policy.
The issue is some users think anything right of Trotsky is "racist", "White supremacy culture", etc. It's a term that has almost lost all practical meaning in $CURRENT_YEAR.
>But I'm happy to supply on request.
I'd love to see some examples, because practically every instance I've seen of racism in the comments section has been [flagged] quickly. I flag it everytime I come across it, and I rarely come across it these days.