There's a less extreme analog that is fairly widely accepted: "intolerant of intolerance."

Though hyperbole is rarely accepted on HN and the OP might just be trolling, in some cultures this type of over-the-top musing is equivalent (when in that cultural context) to saying "intolerant of intolerance" and shouldn't always be taken literally.

Mean words on the internet are rather different from violence, one would think.

Er... they're suggesting that we brand sociopaths and basically ends it at that. I'll pass on a world where having a bad day could lead to enforced disfigurement.

I'm not agreeing with the pro-branding-person, but let's not make the mistake of conflating a bad day and diagnosable sociopathies.

Fair, but this sort of scenario wouldn't exactly exist in isolation right? Would a society that is willing to physically brand people with a permanent "STAY AWAY" marker be super tight in their regulation of diagnosis? lol. This conversation is insane.