Firstly, your implied assertion merits no more than mere denial. Secondly, close examination shows that such Catholics as happen to be criminals have, for the most part, never been in Catholic schools to receive a Catholic training, whilst many were once in a Catholic school only to be transferred to a state school later on, eventually dropping their religion, save in name only. Finally, granted that some Catholics are criminals, their conduct is in spite of, and not because of their religion, for they do just what their religion forbids. They are in no way an argument against the holiness of the Catholic Church. That Church is holy in her Founder, doctrines, worship, and those of her members who are faithful to her guidance. Above all is she holy in the numerous Saints of the ages who have been supremely faithful to her teachings. And no other Church can claim a holiness similar to that of the Catholic Church under all these aspects.
Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty