Kim Jong Un executed his uncle, Jang Song Thaek. Here’s part of the justification:
However, despicable human scum Jang, who was worse than a dog, perpetrated thrice-cursed acts of treachery in betrayal of such profound trust and warmest paternal love shown by the party and the leader for him.
From long ago, Jang had a dirty political ambition. He dared not raise his head when Kim Il Sung and Kim Jong Il were alive. But, reading their faces, Jang had an axe to grind and involved himself in double-dealing. He began revealing his true colors, thinking that it was just the time for him to realize his wild ambition in the period of historic turn when the generation of the revolution was replaced.
Jang committed such an unpardonable thrice-cursed treason as overtly and covertly standing in the way of settling the issue of succession to the leadership with an axe to grind when a very important issue was under discussion to hold respected Kim Jong Un in high esteem as the only successor to Kim Jong Il in reflection of the unanimous desire and will of the entire party and army and all people.
When his cunning move proved futile and the decision that Kim Jong Un was elected vice-chairman of the Central Military Commission of the Workers’ Party of Korea at the Third Conference of the WPK in reflection of the unanimous will of all party members, service personnel and people was proclaimed, making all participants break into enthusiastic cheers that shook the conference hall, he behaved so arrogantly and insolently as unwillingly standing up from his seat and half-heartedly clapping, touching off towering resentment of our service personnel and people.
UPDATE: Commenter Emily writes:
The crime of the half-hearted clap.
I bet he failed to record every one of his nephew’s piano recitals, as well.
Seriously, though, this is a very tragic country. My heart breaks for the people of North Korea.