People on TV and in the movies stopped wearing hats, and society followed.
Edward Bernays was a person who tried to get movies to always show someone smoking to sell cigarettes, and he’d rent famous diamond jewelry for women to wear in movies (he’s the origin of A Diamond is a Girl’s best Friend, I think).
If you constantly see something in the media, you are likely to see it as normal and perhaps wonder why you aren’t doing it too.
Unless you already know it's perverted and disgusting, in which case you turn to other media.