It depends on the story and thread. Generic "capitalism vs. communism" stuff is out because it's repetitive and tedious (and usually nasty) [1]. Same with political/ideological battle in general. Political flamewar is out because any flamewar is out [2]. Sensational/news-of-the-day/horse-race political stories are out because they're not intellectually interesting [2].

But curious, thoughtful conversation on topics with political overlap is ok on HN [3], and always has been [4].

[1] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...

[2] https://news.ycombinator.com/newsguidelines.html

[3] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...

[4] https://news.ycombinator.com/item?id=17014869