In 2020, however, Pyongyang enacted a law to make watching or distributing South Korean entertainment punishable by death.
A defector previously told the BBC that he was forced to watch a 22-year-old man shot to death. He said the man was accused of listening to South Korean music and had shared films from the South with his friend.
This seems to be an unedited version of that video with sound. I don’t speak Korean so I can’t validate it against the article, but the bbc has a reputation for being credible so I’m inclined to believe it. https://youtu.be/GcUe4O_53_0
As for the organization, the only mentions I’ve found are almost all about this, with one mention of it being a think tank in South Korea, which is weirdly little information.