It shall be unlawful for any person, company or corporation to throw, leave or deposit or cause to be thrown, left or deposited upon any street, avenue, alley, sidewalk or public square, public enclosure, lots, vacant or occupied, any paper, handbill, poster, signboard or anything that is liable to be blown about by the wind, or that will obstruct the free passage of the street, avenue, alley or sidewalk.
(`90 Code, § 19-74)