[bolanyo]

I think you are splitting hairs. Control of certain forms of art or literature so that they can't be revealed to all is what we're talking about. The culture in question is very different from ours so we can't expect their taboos or censorship to have exactly the same forms that we might associate with censorship (mean-looking guy with eyeshade and red pencil, hooded monks chained to desks in candlelight, omnipresent super-computer says no, etc).

For example, some stories are not just 'the stories of particular groups' but are not allowed to be told by, or in some cases told to, other groups.

Besides this, how do you know that none of these works have been painted over or hidden?