It is unlawful for any person to commit unlawful use of public property by knowingly entering any public property without permission of the lawful custodian or his representative when the public property is not open to the public, or remaining in or occupying any public property after having been requested to leave by the lawful custodian, or his representative, who has determined that the public property is being used or occupied contrary to its intended or customary use or that the public property may be damaged or destroyed by the use. (Ord. 185 § 3-1-10, 1980)