There were a few articles floating about pre-World Cup about this, they are indeed Chinese hired to cheer for North Korea. I'll see if I can find an article (might be one in the pre-match thread).
I wouldn't trust Western media that much either. I've traveled enough to know they lie often, too. My bet is that they are emigres and perhaps some South Koreans. They are the same people, whatever the political crapola.
The football fan in me would love to see NK snatch a goal. The pool betting guy who had a 3-0 result in this match would like to see Brazil grab another.
In german TV they said that the koreans just give some of their tickets to China because they couldn`t (maybe didn`t want to...) sell them all. They actually showed some Chinese who where for Brazil...
2-0 is still a very respectable result it has to be said. And in truth they were beaten by one superb pass (Xavi-esque) and a cracking finish.
Wow. Ramires makes a horrible tackle. Yellow card. We really shouldn't have given one up. Never mind a goal... wow.