Display of material which is harmful to minors, as defined in Chapter 7.6 of Title 9 of the California Penal Code, in a public place, other than a public place from which minors are excluded, is prohibited unless a device commonly known as a blinder-rack is placed in front of such material, so that the lower two-thirds of the material is not exposed to view. (Ord. 3125 § 1, 1987)