I'm not sure if there is anything like this in English, but in Korean we have an honorific system built into the language. You show very high respect, respect, and just.... People with equal status have a different language system, let's say.
The honorific system can only be used for the people in the leader's family, the Kims. They get the highest-respect language. You can't use that style of language for anyone else. So within the language itself you're classifying. You're splitting the people into classes. There's a specific style of language that you can use only with regard to the leader's family and the leader.
For literature, we have the juche ideology. That is built into the literature that's coming out of the government departments. If we look at poetry, in North Korea you can't use the word “tears” with a person in general. You can't use that. There was a very famous poet in North Korea by the name of Kim Chul. He wrote “dew” instead of “tears”, since he couldn't use the word “tears”, but they caught on to that. He was sent to a prison camp for 15 years.
Everything starts from this ideology. We have these prescriptions for every different type of literature. Basically, it's all just used as a tool, and legally as a tool, for propaganda only. There's a people's literature division within the UFD where they come up with the means to control everything in popular culture. But there is no popular culture, because no one's allowed to come up with their own songs. You can't do anything, even on your gravestone. On the gravestone you can put the person's name, their birthdate, and that's it, because people can read that gravestone and they don't want anyone to read something that they haven't prescribed.
You probably can't imagine this type of control, but everything starts from the language, what you can use and what you can't.