(1) The Council finds that:

(a) Many serious crimes are committed in the City by persons who have previously been convicted of the same or similar crimes;

(b) Frequently, such crimes are committed by persons previously convicted of certain crimes, who have come to the City from other jurisdictions;

(c) The undisclosed presence of such persons within the City constitutes a serious menace to the preservation of the public peace, health, safety, morals and welfare;

(d) The danger resulting from the presence of such persons in the City can best be alleviated and controlled by the registration, photographing and fingerprinting of such criminals, under certain terms and conditions.