"If you're an average North Korean, it's nearly impossible to even leave the country—and if you are caught trying to escape, you'll probably spend the rest of your life in a political prison camp, where you might be joined by three generations of your family, all arrested for 'guilt by association.'"
PBS' show Frontline featured a group of defectors who are willing to risk everything to escape. Most of these defectors got their desire to escape from goods smuggled in from the outside that provided a different perspective on their reality. The goods included smuggled radios, DVDs, and thumb drives with Western shows.
Possible Preaching Angle:
That sounds a bit like the Bible—news from outside our system that provides a hunger for a different view of reality and a better life.