supporting evidence?

Here's an article about a documentary on gymnasts in North Korea from the Washington Post (you'll need to subscribe to read it, but subscribing is free).

An excerpt from that article:

The film documents North Koreans' extraordinary devotion to Kim [Jong Il], who is viewed in the country as a semi-religious figure. He is kept at the center of national life through everything from propaganda cartoons for children to state radio broadcasts in every home. The film shows how the volume on radios in North Korea homes can be lowered but not turned off.

So a British filmmaker and an American reporter saw fit to mention this radio as characteristic of a highly propagandized household in a totalitarian regime, and I have one in my dining room.