This approach has been stable for many years and there's no intention to allow HN to become a primarily-political site (quite the contrary) but it also doesn't work to try to exclude these things altogether.
I do think this news is major enough to justify being on HN. There is at least some useful discussions on the ICC that I found interesting, intermixed between the typical antisemitic messaging we're all-too used to seeing.
That's what happens here, and on any news involving the Gaza War, for quite some time. To someone who doesn't use [showdead] this creates an impression of partiality in this community which is not borne out by reality.
Which makes Hacker News appear complicit in supporting that point of view.
If you're going to keep overriding the flag mechanism and letting these posts hit the front page, you need to disable flagging of individual posts except by you or another moderator (if there is one?) after manual review. The status quo is unfair.