It is an infraction, subject to penalty as provided in section 1-4-1 of this code, for any person or persons to congregate about or upon any sidewalks, stairway, doorway, window or in front of any business or dwelling house, theater, lecture room, church or elsewhere and by so doing to obstruct or interfere with the free passage of persons entering, leaving or occupying such building or premises. (1991 Code § 12.08.110, as amended; amd. 2009 Code)