Laws change attitudes. Many times laws are the first step towards more approval of a certain new societal value and even lead the step to a quicker mentality change.  This was seen with the legalizing of gay marriages in many countries, among them also in some states in the US. In 2010 the approval among US citizens reached more than half of the population, which is a drastic improve from the past. [1] In the beginning there was very little approval of the policy and same-sex marriages in general, an open discussion about the law, the first actual practical implications of the law and consequences have over time gained more acceptances in most Western countries towards gay marriage.  The same principle will apply to an alcohol ban. While in the beginning there will probably be a lot of protest, there will probably also be a change of mentality later on.  [1] Gallup, Americans acceptance of gay relations crosses 50 %  , accessed 08/13/2011