Once in China, however, aren't escapees routinely exploited by organized crime?
"Beyond Utopia" is a harrowing documentary about a South Korean pastor who helps people escape NK, filmed on the trail side by by side with along some actual refugees. It illustrates how complex, dangerous and utterly corrupt the process of getting out is, and also mentions the role of local gangs: they detain refugees and then do a bidding war between the authorities and relatives to extract every penny.