While I agree with you that all of those things are ridiculous (and I was vocal in arguing against them), is it fair to characterize the
entire forum as being so easily swayed by ant-state sentiments?
During the two week "freak out", I saw a lot of linkbait about the NSA having massive conspiracies, but I saw relatively fewer actual comments where people were clearly being swayed by anti-government sentiment. For every comment I read that was outlandish, fallacious and clearly media spoon-fed, I have to say I can recall a thread of people saying, "No, that doesn't make sense, you're trying to disprove a negative", etc.
tl;dr - My point here is that I think the baseline intelligence of Hacker News is higher than we might think it is just by observing the front page, and that there are actually a lot more savvy people gaming the front page who are just driven by a relative few who act as the passionate, vocal majority.
That's just my opinion. I could be wrong. But I like to think there's a lot of under the radar intellectual activity, and people are just being really opportunistic for karma or some such.
As for legal acumen, I agree completely - I don't have nearly as much as, for example, 'rayiner. But that's exactly why we have people with niche expertise or domain knowledge. It's a real problem when people get frenzied and decide they know Constitution without having read it.
I haven't been here as long, but I believe that we have sampling bias from the hugely outspoken minority who know it's trendy to be anti-state.
EDIT: I want to submit my experience about the site being gameable - it's true it's easy to get the top comment for news stories that are heavily politically loaded, but I have to say it's easy to karma farm even if you're not anarchist/cynical/conspiracy mongering. I do not try to game the forum to get high comments, but I can still personally attest to having some top comments in the high 40s during the NSA scandal while being incredibly vocal against the "popular opinion" that Google was directly aiding the government. I probably had the top comment on at least half of those stories, arguing against the tone of the story profusely. I don't have a sockpuppet ring, so those numbers of people who upvoted me are to the best of my knowledge genuine. They may not have been as vocal in their agreement with me as the detractors who replied to my comments, but they certainly exist.
I guess I just want to try to dispel pessimism. I don't think all is lost regarding the political climate of Hacker News :)