“South Korean activists launched about 600,000 anti-North Korean leaflets across the border on Tuesday, a move that will anger Pyongyang which insists Seoul should forcibly prevent such events. The leaflets were sent with helium balloons from a park in the border town of Paju by a North Korean defector group to mark the sinking of a South Korean warship four years ago.”
Source: S.Korea activists launch leaflets, DVDs into North | GulfNews.com