One only need to study the recent history of Europe, perhaps France and Asia, an example being China. In both countries revolutions, that is violent ones, were powered by the masses of commoners tired of injustice imposed on them by the ruling class. In both examples, the once docile lower class took charge of attempting to lead their own lives. In both countries, the fighting between gentry and commoners had left the lands in disarray and dangerous position as a whole. While once can endlessly accuse those who partook in the reckless abandon of destroing and mutilating one's homeland, it is also human to understand why they have taken part in such destructive behaviour.
Humans have only a certain level of pain it can take.
I believe a similar feeling is evident in the two Koreas-though in differing standards. I see the Koreas as a ripe place for a revolutionary war. Heat absorved has to be emitted somehow, somewhere. While I am only familiar with the South, I must say that during my trips to South Korea, I saw plainly a huge underclass living barely on borrowed money and time filled with stress. And clearly contrasted, I saw a small yet very visible upper class that has no real worries of its own except where to pleasure their senses and with whom to experience it with.