No pictures, publications, videotapes, movies,
covers or other implements, items or advertising that fall within
the definition of any use listed above, or are erotic, prurient or
related to violence, sadism or sexual exploitation shall be displayed
in the windows of or on the building of any establishment listed above
or be visible to the public from the pedestrian sidewalks or walkways
or from the other areas, public or semipublic, outside such establishments.