There is probably no need for moderators to do anything. Moderation is crowd sourced. I believe it only takes 4 people that have at least 31 karma to flag something to make it go away. Someone can briefly vouch it if they have 31 karma but then it can get flagged again.
If there are not at least 4 people that click flag (assuming I have the right number for flagging) then perhaps this is becoming a political site meaning they will have to revise the guidelines. I suppose a moderator could revise the sites code to auto-[dead] submissions with political keywords thus requiring a vouch or if that already exists add some words to it.
> Mainstream world news has a place on HN if it contains "significant new information", and as much as this site is primarily for curious conversation and gratifying intellectual curiosity, we don't want to pretend that horrific events like this aren't happening.
That thread is just 1 out of 30 on the front page. Far from "so political."
I've seen it more here too and have been using that "hide" button a lot more than I ever thought I would.