Subtle Danger in Legislation vs. Laws

One of the hidden dangers in the legislative State--where the rules are set by politicians rather than evolving in a market process--is that phony rules can be enforced. (Related to this, people can pose as police officers and get away with all sorts of scary stuff.) My wife brought my attention to this article, and pointed out that the cops didn't even know what the rules were, but just blindly obeyed these signs.