It is found and declared that:
A.
The discharge and firing of air pistols and air rifles of a type capable of firing projectiles within the compact parts of the City of Laconia has constituted a public nuisance and an increasing detriment to the public health, comfort, convenience, safety, welfare and prosperity of the residents of the City of Laconia; and
B.
The necessity in the public interest for the provisions and prohibitions hereinafter contained and enacted is a matter of legislative determination and public policy, and it is further declared that the provisions and prohibitions hereinafter contained and enacted are in pursuance of and for the purpose of securing and promoting the public health, comfort, convenience, safety, welfare and prosperity and the peace and quite of the City of Laconia and its inhabitants.