You said "bulk of the community" twice here, what does that mean? Are you claiming that most users don't want to see these threads, and that the flagging system represents it? With how quickly threads get flagged (and seeing how they can even stay on /active for a day or 2 after being flagged) there is clearly not a reasonable quorum of users making these decisions.
I understand that a large number of users choosing to talk about a topic does not mean the topic should remain on HN (which I believe you've said before). But I'd like to see more evidence before you say what the "bulk of the community" wants.
Encouraging conspiracy theories against one of the largest components of the US military industrial complex is precisely something Al Jazeera would be willing to risk losing credibility over. Not that they actually would, because there could never be sufficient evidence to disprove such a conspiracy.
I understand that a large number of users choosing to talk about a topic does not mean the topic should remain on HN (which I believe you've said before). But I'd like to see more evidence before you say what the "bulk of the community" wants.