Actually I just remembered what I described in my previous post is rumored to have been accomplished before, and in relatively modern times at that. Commune De Paris, 1871. It's said that there were no police, no laws, no authority figures, no crime. People just gathered together and discussed their concerns, worked them out as a community through consensus. Probably helped that their society was Socialist, so there was no oligarchy, everyone made a decent living, and what hierarchy which existed wasn't in the dominating form as it is today - plus the people had just freed themselves from a tyrant, so the people weren't particularly interested in forcing anything on others.

That society of course failed very quickly, as the European monarchs realized how threatening their revolution was, at which time the German and French militaries assaulted Paris together followed by mass executions and reestablishing French governance.