"they did it of their own free will" can you truly stand there and exclaim that and mean it?  I find that, to be highly doubtful, that these North Korean workers, did this out of "their own free will," because there is "no free will" in North Korea and there has not been any in several generations, since the ending of the Korean conflict.

As what ths is, seriously is a totally different and more insidious form of slavery, than that of the African slaves; but if you can't see that for yourself, then you truly must be blind to the plight of the North Korean people.  As those very same "African slaves" eventually became citizens of the United States; while in North Korea, it's the dicator government, doing this to its own population, to further it's insidious and nefarious causes!