The United States is quite a violent place and it is reflected in its media. With multiple wars on going and a huge weapons industry people have become to accept it as normal. Prison rape is accepted as something that just happens and police across the nation are armed like military.
This does not address the OP's question in any way.
The US is also quite a sexy place, with a lot of sex happening. Last time I heard, everyone's parents had sex at least once, and most people had it multiple times over the course of their lives!
Why then we censor this, by every definition, commonplace activity?
All of these things (violence guns, police, censorship, etc) are about controlling people and restricting freedom. "Land of the free" is an advertising slogan; America is one of the least free countries there is.
