Arirang is the largest gymnastics/propaganda show in the world, involving thousands of people in a massive tribute to Kim Il-Sung, Kim Jong-il, and the North Korean regime.
An account of the Arirang games can be found here. From this article:
Arirang, however, is part of a propaganda offensive on a scale that would make a big-spending Hollywood mogul envious. The stage is the 150,000-capacity May Day stadium in Pyongyang, and the cast is 100,000 strong. The performance is a technicolour mix of entertainment: a floorshow by 1,000 dancers; a military tattoo; a martial arts display; hordes of waving, smiling children; an aerial ballet by dancers on bungee ropes.
The most breathtaking element of Arirang is the backdrop - a giant human mosaic that forms elaborate panoramas of megacities, slogans and cartoons. More than 30,000 children form a flip-card unit working so quickly that some pictures appear to be animated.
It is an awesome product of political control and economic weakness. Starved of energy, and economically retarded, the only resource North Korea has in abundance is its people - and they are often employed in places where richer countries would use electricity. Just as policewomen direct Pyongyang's traffic rather than automated lights; in Arirang, tens of thousands of children are used to create a giant screen.
Even at the height of Soviet power, Moscow would have struggled to choreograph such a mass performance. The politics are surreal. The "prosperous fatherland" reads one giant banner above a mosaic of ploughing tractors - no matter that almost all farmwork is done by hand because vehicles and fuel are in such short supply. "Green revolution" reads another, over an image of bumper crops, despite the fact that the nation has not been able to feed a third of its people for a decade.
Youtube has several videos of the event. This one is of the children's performance. Remember that the background is not an electronic screen; it's a massive 30,000 person card stunt.
If President Roh does end up attending, he is in effect turning a blind eye to the ugly side of Arirang: the treatment of the child performers. Unification Minister Lee Jae-Joung seems to be doing preemptive damage control in this regard. From the Chosun Ilbo:
According to the testimony of North Korean defectors, one side of the May Day Stadium where the performance takes place often smells of urine. That’s because students are not allowed to leave their positions while practicing the flash card performance. So they simply urinate while sitting down in their seats. Many children are said to end up getting bladder infections. One wrong move and children are clubbed and punished in groups. Kim Hyun-sik, former professor at Kim Hyung Jik College of Education, said the Arirang performance was “soaked with the blood and tears of the North Korean people.”
Regarding questions as to whether the South Korean president should attend such a performance marred by allegations of child abuse, South Korean Unification Minister Lee Jae-joung retorted whether the lengthy training of South Korean children for a play or sports event could be viewed as abuse was uncertain. Regarding North Korea’s human rights violations, Lee pretended not to know, saying human rights issues should be interpreted according to the unique circumstances of a particular society. He added that there was no concrete evidence of human rights violations in the North.