BANGKOK, Thailand — With shaking hands, the North Korean climbed onto the shoulders of a buddy to reach the underside of the bridge. As another accomplice stood guard, he hung up a banner denouncing North Korean leader Kim Jong Il in bright red paint.
Then he took out a video camera, disguised to look like a carton of cigarettes, and filmed his handiwork for posterity.
Today, the North Korean who says he shot the video on behalf of a group called the Freedom Youth League lives in hiding in Thailand under an assumed name. A small, wiry man in his 30s, he smoked L&M cigarettes nervously as he recalled his daring feat against the totalitarian government.
Everything had to be done with the utmost secrecy, he said, to the point that he and his associates communicated by means of notes passed in sacks of potatoes. He didn't dare tell even his wife.
"If we were caught, everybody would be dead," said the man, who goes by the name Park Dae Heung.
The 33-minute tape has created a sensation in Japan and South Korea, where it has aired repeatedly. South Korean human rights advocates say it is the first evidence of a nascent dissident movement inside North Korea.
Besides the banner hung on the bridge, the video shows an anti-government banner in a factory restroom and has one particularly eye-catching scene in which the camera pans over an official photograph of Kim Jong Il defaced with graffiti as a man denounces him off-camera.
The video is one of a series of samizdat videos that provide a rare glimpse of life in what may be the most secretive country in the world. Since the beginning of this year, videos have emerged from inside North Korea of a public execution, children begging at a train station and humanitarian aid from the United Nations being sold at a market.
Among North Korea watchers, there is some debate about whether the filmmakers were motivated mainly by their opposition to the government or by greed. Many of the videos have been sold to Japanese television stations, which have paid as much as $200,000 for choice footage, according to some accounts.
That people are able to make such videos challenges many of the assumptions about Kim's grip on power. The videos do not necessarily mean the government is on the verge of collapse -- the majority opinion among analysts is that it is not -- but their existence shows that social control is fraying at the edges.