It is unlawful to hinder, annoy or molest persons passing along any street, sidewalk, crosswalk or other public way, or to loiter sit or stand around the entrance of any church, theater, public building, or other place of public assemblage in any manner so as to unreasonably obstruct such entrance or to place or erect upon any public way an obstruction of any type except temporary barriers or warning signs placed for the purpose of safeguarding the public against any hazard. (Prior code § 7-1-12)