Coffeeshops are the most famous example of Dutch tolerance. But in fact, these cannabis distributors are highly regulated. Coffeeshops are permitted to break the law, but not the rules. On the premises, there cannot be minors, hard drugs or more than 500 grams. Nor can a coffeeshop advertise, cause nuisance or sell over five grams to a person in a day. These rules are enforced by surprise polic…