Anti-Kim Jong Il graffiti was found on the wall of a college in Pyongyang. And then the government locked down the entire capital to hunt for the culprit.
The graffiti, found June 24th on a wall at Pyongyang Railroad College reportedly called Kim Jong Il "a dictator who starved people to death." Not exactly Banksy, but it gets the point across.
NK Daily talked to a Chinese trader about the investigation: According to the trader, the authorities launched the search for the person responsible via a joint investigation team including the National Security Agency and People's Safety Ministry, specifically targeting students and people from other provinces. They established road blocks on the roads linking Pyongyang Station and West Pyongyang Station, Pyongyang-Pyongsung, Pyongyang-Wonsan and Pyongyang-Kanri, then began questioning all passers' by.