> I see comments like this all the time on HN, including between community members

That's bad, and I'd like to see links to those.

> Why are you showing up now?

If you mean why do I respond to post A but not B, the answer is usually that I saw A but didn't see B. We don't come close to seeing everything that gets posted to HN—there's far too much. If you see a post that ought to have been moderated but hasn't been, the likeliest explanation is that we didn't see it. You can help by flagging it or emailing us at hn@ycombinator.com (https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...).

> Are we allowed, for example, to call Trump an insecure man with orange skin and tiny hands?

That's certainly a cliché, and it's hard to see how repetition of tropes fits with the intellectual curiosity that we're optimizing for (or rather, trying to! - https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...). As I've said in the past, curiosity withers under repetition and fries under indignation (https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...).

I think, though, that the issue with a political cliché is rather different than posting that someone "doesn't look human".