(a)   As used in this section:
      (1)   “Riot” means any unlawful use, by three or more persons acting together, of force or violence which seriously jeopardizes the public safety, peace or public order.
      (2)   “Unlawful assembly” means an assembly of three or more persons sharing the common intent to advance some lawful or unlawful purpose by the commission of an act of unlawful force or violence likely to jeopardize seriously public safety, peace or order, and which assembly actually tends to inspire persons of ordinary courage with well-grounded fear of serious and immediate breaches of public safety, peace or order.
   (b)   No person shall participate in any riot.
   (c)   No person shall participate in any unlawful assembly,
   (d)   No person, except public officers and persons assisting them, shall remain present at the place of any riot or unlawful assembly after having been lawfully warned to disperse.
(Ord. 85-03. Passed 1-22-85.)