North Korea is a country ruled by one leader - Kim Jong-un. He wants people to really love him, so he has made it so that everyone in North Korea has to think he is special and act like he is perfect. This is called the "Cult of Personality". It means that everyone has to show how much they love their leader, by cheering for him, saying nice things about him, and praising him in public. It's not allowed to say anything bad about him, or even criticize him. People who don't show enough love for Kim Jong-un can get in trouble.