I didn't bother to read the thread, but I'm just here to post my $.02 as a South Korean.
First off, the citizens of North Korea were completely alienated from the outside world, so to them, Kim Jong Il was a savior who revived their country from the deep. They never were actually exposed to the horrors of the big hancho and how much everyone else in the world hated the bastard. And of course, when a famous person that everyone looks up to dies, people cry.
However, there are mass amounts of propaganda in this video, especially with the children crying. I mean even if they are North Korean, the only thing they should be crying about these days is spilled milk.
I don't really know what I just wrote so yeah.