As in no outright slurs, right? I've seen plenty of race realist comments, as well as "James Damore is right about women in tech".
Same goes for commentary on Chinese people or Palestinians, though nowhere near as extreme in animosity as that towards the Russian.
This is a variation of the little boy who cried wolf. If "racism!" is cried for every single little thing that needs discussion, then one day it actually is racism and nobody will be listening.
Instead, it's always about how the immigrants should be locked up or deported. And that's always about immigrants from Mexico, never from Canada or other places.
Complaining about Indians, complaining about women. But they don't even know that's what they're doing so you can't say "hey stop being sexist". They're surrounded by men all the time, of course it will never click in their heads.
If you see a post that ought to have been moderated but hasn't been, that by no means implies that the post is ok or somehow blessed by the mods. The likeliest explanation is that we didn't see it*. We don't come close to seeing everything that gets posted here.
You can help by flagging such a post or emailing us at hn@ycombinator.com. It was only because someone brought those unacceptable comments to my attention that I was able to respond. We can't moderate what we don't see!
* https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...