No minor shall be employed in the selling, manufacture, distribution or other handling of alcoholic beverages at any place within the city. No person shall employ or assist or aid in causing the employment of any minor at any place within the city in the selling, manufacture, distribution or other handling of alcoholic beverages. No minor shall be permitted to remain within or to loiter about the premises of a retail alcoholic beverage store. Violation of this provision shall subject the owner or proprietor, as well as the underage person, to prosecution.