It shall be unlawful for any person to paste, post, paint, print or nail any handbill, sign, poster, advertisement or notice of any kind on any curbstone, flagstone or any other portion or part of any sidewalk, or upon any tree, lamppost, hitchpost, telegraph pole or hydrant without permission from the city council, or upon any private wall, door or gate, without the consent in writing of the owner of the wall, door or gate; provided, however, that this section shall not prevent posting by proper city and county officials of election signs, polling place signs and other signs or placards necessary under the law to the conduct of elections. (1975 Code; amd. 2004 Code)