[I]f one had to be insured to issue public speech (sort of like homeowners insurance – everyone had it) then we would rapidly evolve classes in making public speech, which would demonstrate how to witness (truth telling). (Heinlein suggested something of this order.) Now some speech advocates theft, and some does not. Some purports to convey truths, and some does not. This is essentially restoring the greek discipline of rhetoric in an age where media replicates faster than greek era human voices could quell. This is also much closer to anglo saxon law. Why is it that I an produce a ladder that subjects people to harm and am accountable, but if I advocate a political policy that causes millions of deaths, I am not accountable?
(as usual, I am suggesting a common law (property rights), universal standing, and private insurance based solution to regulation, with fairly high confidence that the public, insurers and producers will seek practical means of solving problems without authoritarian intervention.)