"Right, so, I sure would get the heck out of that square, and then, yes, I'd want that person removed from my city, or rendered psychiatric assistance, as appropriate depending on whether what they were saying was {true, false-but-lying} or false-but-honest."
"I think you have a fundamental presumption about governments acting in bad faith by default which I straight-up do not share. The thing where I don't rush out of the public square is if they shout, 'There is a secret government project conducted in bad faith which you can verify by looking at the following details...' and then, they're probably crazy, but you maybe hang around and look it up so that your society can maintain its theoretical ability to remove bad governments. Somebody shouting about a secret government project that the government is keeping secret for a good reason is just an asshole."