How do you counter the argument that in an anarchistic society a big thug will arise to become the Ruler?
I know that it is a silly objection because that is already the situation we find ourselves in: The strongest, least ethical, monsters have set themselves up as "our government" and made rules that protect themselves to our detriment. I also realize that a fully armed population, willing to defend themselves from tyrants, is the remedy to this, but few people will accept that.
This is the objection to liberty that I find most difficult to dispell, even though I don't believe it myself. How do you convince people, who base their entire lives on this premise, that they are wrong?