North Korea is a piece of shit regime but the only way you can even hope of improving the conditions for the prisoners and the people living in poverty, is by establishing some sort of a dialogue with the regime itself. By somehow getting it through their thick heads that they can also govern a population by giving them carrots instead of the stick.
The problem with NK right now is that they've got no carrots to give. They're isolated from the global market and partake in no trading whatsoever. Technologically and productively they're backwards. The fear of the lash, is all that's keeping the structure in place.
The other possibility is to assassinate the entire government with a squad consisting of Rambos. But that's probably not happening.
People have cried about the plights of North Koreans for 50+ years. But nobody has done jackshit about it. They'll keep crying for them, for another 50 years. Doesn't change the situation at all.
Whatever happens, atleast Trump can say that he tried something. Might not be worth much, but it's still probably worth more than all of the whining and crying.