§ 131.20  MOB ACTION.
   (A)   Mob action, which is unlawful, consists of any of the following:
      (1)   The use of force or violence disturbing the public peace by 2 or more persons acting together and without authority of law;
      (2)   The assembly of 2 or more persons to do an unlawful act; or
      (3)   The assembly of 2 or more persons, without authority of law, for the purpose of doing violence to the person or property of any person supposed to have been guilty of a violation of the law, or for the purpose of exercising correctional powers or regulative powers over any person by violence.
   (B)   No participant in a mob action shall by violence inflict injury to the person or property of another.
   (C)   No participant in a mob action shall fail or refuse to withdraw on being commanded to do so by any peace officer.
(Prior Code, § 9-11)  Penalty, see § 10.99
Statutory reference:
   Similar provisions, see ILCS Ch. 720, Act 5, § 25-1