The South believe the North is preparing for a second nuclear test, possibly to be held later this week:
http://www.abc.net.au/news/2013-04-08/n-korea-showing-27signs27-of-preparing-nuke-test/4616098
Apparently Kim prefers Groucho, Chico and Harpo's brand of Marxism when it comes to naming streets.
I'm sure everyone else in that country would love to see him go.
Nope.
Jong-un has what is called a cult of personality, where he is venerated by the population to the point where he has a god-like status. He inherited it from his father, Jong-il, who in turn inherited from his father, Il-sung. They are able to do it because they are the sole authority in the country, and have absolute control over the media, who will report whatever Kim tells them to report. Every now and again, you will hear an absurd story, like Kim Jong-il hitting eleven holes-in-one in a single round of golf; these stories are designed and intended to reinforce the idea that the Kims are pretty much perfect. For instance, the North Koreans are taught that Kim Jong-il was born on the slopes of a holy mountain, with his birth being foretold by a swallow, and marked by the appearance of a double rainbow in the sky. In reality, he was probably born in a Soviet military camp on the outskirts of a dirty industrial city in the middle of Siberia (can you blame him for wanting to change that story?). Footage of Kim Jong-il's funeral was shown with North Koreans packed ten deep down the streets of Pyongyang, showing genuine grief at his death. That's because of his cult of personality, which is effectively brainwashing on a national scale.
Furthermore, the regime in Pyongyang cracks down on dissidents swiftly and brutally. They and their families are forcibly removed from their homes and sent to gulags without trial for what is quite literally a life sentence. Most of them are worked to death, whilst others are used as guinea pigs for human experimentation to test the development of the North's chemical weapons programme.
