when the senior-most north korean defector hwang jang yop defected, his relatives were rounded up in north korea and were sent to prison camps. these guys didn't even know they were related to hwang jang yop when the security guys came knocking on their door. they said, "i'm related to hwang?" it was, like, a ninth cousin. this is how north korea operates. narrator: recent satellite imagery analyzed by amnesty international shows that since kim jong un came to power, the political prison camps have grown. 200,000 civilians who are outside of the criminal penal system. one of the camps, hwasong, is 540 square kilometers, three times the size of washington, d.c. narrator: it's estimated that as many as one in 100 north koreans is a political prisoner, many of whom were caught trying to defect. still, several thousand north koreans try to escape through china each year. lee, the former street kid, fled when he was 18. (translated): i was very scared, but i thought, "it's better to die than live like an insect." before i left, i prepared a little bit of food. i roasted some beans. i ate l