While that could be a historical cause, these days it's actively part of the American culture. Interestingly there is almost a kind of hypocritical attitude. A

While that could be a historical cause, these days it's actively part of the American culture. Interestingly there is almost a kind of hypocritical attitude. A lot of American culture involves sexualisation, especially involving celebrities; which often extends to kids in varies ways (fashion, magazines, music). Then parents also try to keep sex and nudity from their children, because they deem it will 'damage' them.