Any individual who willfully, and without just cause, interferes with or disrupts the recreational activities of individuals, groups, or entities granted the use of a recreation center by a governing body is guilty of an infraction, and shall be punished by a fine of not more than two hundred dollars ($200).
Source:
Section 10902.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=EDC§ionNum=10902.5..