More examples of this silliness
Teens have sex (legally), seeing each other naked having sex is also legal, photographing and seeing the photograph of them having legal sex is a 10 year prison sentence.
http://news.com.com/2100-1030_3-6157857.html
Because to protect the teens from ruining their lives by doing something they're biologically programmed to do since puberty, you have to lock them up and erm.... ruin their lives.
Oh, and if a security camera had photographed them having sex, that would also have been legal.
Then there was also the US case involving a legal pornographic bulletin board in California:
http://www.eff.org/Censorship/?f=obscen_virtcom_stds_godwin.article
Here the postmaster of Tennessee didn't like the bulletin board in California because Tennessee residents could access it. So he sent the owner child pornography through the post. Receiving child porn through the post is a federal offense, so he was able to get the man extradited to Tennessee on the federal child porn law. The child porn claim was then dropped and he was prosecuted for allowing Tennessee residents access to his adult legal bulletin board.