It shall be unlawful for any person to expose, display, post up, exhibit, print or mark, or cause to be placed any placard, poster, bill or picture of any show, exhibition, theatrical or other performance or any advertisement on any public building, billboard, wall or fence on any street in the city, unless such placard, poster, bill or picture or advertisement shall have been approved by the chief of police, or some person designated by him. (Ord. 4881, 10-10-1984)