Germany actually has this organisation that goes beyond rating media like games and films but can actually completely ban an item from sale or distribution if it is deemed "Harmful to Minors" which they define as:
Objects are considered harmful or dangerous to minors if they tend to endanger their process of developing a socially responsible and self-reliant personality.What actually happened in practice was that items on the "index" were only available through certain outlets like sex shops.
I first came upon this "Won't somebody think of the chiiiiildren!" nightmare organisation some years ago through a German punk outfit "Die Ärtze" (The Doctors) who had one of their songs banned by the blue noses at the BPjM; it was a lovely little ditty about a girl called Claudia and her German Shepherd dog, went something like this...
Claudia hat nen Schäferhund
und den hat sie nicht ohne Grund,
Abends springt er in ihr Bett
und dann geht es rund!