The mayor is authorized to promulgate any, all or part of the following restrictions:
A. Alcohol: Order the immediate closing of all taverns and order the cessation of the sale or any other distribution of intoxicating liquor and beer;
B. Weapons: Order the cessation of public display, possession, sale or any other distribution of firearms and ammunition;
C. Explosives And Flammables: Order the cessation of the sale or any other distribution of explosives and flammables;
D. Curfew: Order the closing of all or some public parks, public streets or other public places during specified hours;
E. Assembly: Order the cessation of gatherings by three (3) or more persons in public buildings, streets, parks and other open areas, either public or private;
F. Other Activities: Order the cessation of any other activities reasonably believed hazardous to the maintenance of public safety. (2000 Code § 38.03)