Flags are generally from user votes- so probably too inflammatory/political to some here.

Per the guidelines: "Off-Topic: Most stories about politics, or crime, or sports, unless they're evidence of some interesting new phenomenon. Videos of pratfalls or disasters, or cute animal pictures. If they'd cover it on TV news, it's probably off-topic."

Flagging is automatic based on user-submitted flags, presumably based on HN app thresholds.

https://news.ycombinator.com/newsfaq.html