It is unlawful for any person to obstruct any public street or alley, sidewalk or park or other public grounds within the town by committing any act of, or doing anything which is injurious to the health, or indecent or offensive to the senses, or to do in or upon any such streets, alleys, sidewalks, parks, or other public grounds, any act or thing which is an obstruction or interference to the free use of property or with any business lawfully conducted by anyone, in or upon, or facing or fronting on any of such streets, alleys, sidewalks, parks or other public grounds in the town. (1986 Code § 10-1-8)