It shall be unlawful for any person to loiter, stand or sit in or upon any public highway, alley, sidewalk or crosswalk so as to in any manner hinder or obstruct the free passage therein or thereon of persons or vehicles passing or attempting to pass along the same, or so as to in any manner annoy or molest persons passing along the same.
('61 Code, § 20.7) (Ord. 156, passed - - )