16 It is an exceedingly great comfort to Us to note the outstanding success of the crusade. Because of your vigilance and because of the pressure which has been brought to bear by public opinion, the motion picture has shown an improvement from the moral standpoint: crime and vice are portrayed less frequently; sin is no longer so openly approved and acclaimed; false ideals of life are no longer presented in so flagrant a manner to the impressionable minds of youth.
Source: Vigilanti Cura (Vatican.va)