...so what? "Most stories about politics" are considered Off-Topic, as per the guidelines[0], and some members favor the flag- over the hide-button more than I'd like. It's still on place 19 on the active list[1], and a far cry from any practiced censorship like on Reddit, where stuff just gets [deleted] out of existence.
Yes. When it is complaint about some leftist student protesting and thus interfering with far right speaker free speech rigth to never be opposed, regualarly discussed. Rarely flagged.
But, when there is something making current admin or far right lool bad, flagged quickly
[0]: https://news.ycombinator.com/newsguidelines.html
[1]: https://news.ycombinator.com/active