Every person who carries upon his person or in his hand or hands, concealed or otherwise, any slingshot, sand club, or metal knuckles, or spring blade knife, or any knife the blade of which is automatically released by a spring mechanism or other mechanical device, or any knife having a blade which opens, or falls, or is ejected into position by the force of gravity or by an outward, downward, or centrifugal thrust or movement, any stun gun or “tazer,” or any instrument by the use of which injury could be inflicted upon the person or property of another, at any public meeting within the city, shall be guilty of a gross misdemeanor. In addition to any penalty imposed, the dangerous weapon shall be subject to forfeiture by the court. [Ord. 538 § 1 (§ 10.12.020), 2014.]