I watched a documentary called State of Mind about two young gymnasts who were training for the Pyongyang Mass Games, it was very interesting (it was on Netflix at one time, not sure now). It did seem like North Korea was one big cult. These girls train for eight months to perform at the games, they feel it is a big honor and they must be absolutely perfect, it reflects on the entire family and they make a lot of sacrifices to enable the girls to perform. After all that their leader didn't even show up to watch the games.
Everyone is told the reason they don't have enough food is because the U.S. wants them to die, and they believe it because no one is allowed to say anything different. They are just as mind controlled as anyone in a religious cult.