Code of Alabama
Article 1 - Offenses Against Public Order and Decency.
Section 13A-11-5 - Unlawful Assembly.

(a) A person commits the crime of unlawful assembly if he assembles with five or more other persons for the purpose of engaging in conduct constituting the crime of riot or if, being present at an assembly that either has or develops such a purpose, he remains there with intent to advance that purpose.
(b) Unlawful assembly is a Class B misdemeanor.