1. It shall be unlawful for any person to enter, without proper permission, upon the property of another or into an area or structure on such property (whether such property, area or structure is public or private), particularly when such entrance is plainly forbidden by signs or otherwise, or when the property, area or structure is enclosed, except when such entrance is in the line of duty, with the expressed or tacit consent of the owner or person in charge, or otherwise by authority of state law or ordinance.
2. Every person who intrudes or squats upon any lot or piece of land within the city without authority from the owner thereof, or who erects or occupies thereon any hut or other structure without such authority, and every person who places, erects or occupies within the bounds of any street, alley or avenue of the city, any structure whatever, shall be guilty of an offense.
3. It shall be unlawful to remain on private property at any time other than during posted hours of business operation, after having been directed to vacate such premises by a police officer or by the owner or other person in lawful possession of the premises or by the agent, servant or employee of the owner. The provisions of this subsection 3. shall not apply to persons, including employees, whose presence on the premises is authorized by the owner or person in lawful possession of such premises, nor shall the provisions of this subsection 3. apply unless the hours of the business operation are posted upon such premises. It shall also be unlawful to return to said private property before the posted time of opening for business operation on the next business day, after having been directed to vacate such premises under the terms of this subsection 3.