where are the north korean people?

in 1776 the population of the american colonies was about 2.5 million. about half were patriots. even less were those who took up arms against great britain. they were successful.

iran has a population of 80 million. brave protesters are speaking out against iran's evil, corrupt, dangerous, tyrannical theocracy. 
Iran protests: How Trump can strike a fatal blow against a dangerous, tyrannical regime | Fox News 

north korea has a population of 25 million. where are they? isn't it about time that they overthrew the evil tyrannical government of kim jong un? in fact, it's long overdue.