Anybody familiar with the Soviet Union probably knows black market trading was pervasive even though the communist government tried tirelessly to ruthlessly crush it. Black markets spring up anywhere a government is trying to restrict trade. Even the totalitarian government of North Korea can’t shutdown black market trading:
Although short, this video echoes a lot of ideas expressed by agorists. Namely that market forces are capable of undermining government regimes. The new generation in North Korea doesn’t remember the founding of the current regime. As is common in such situations they a proving to be less loyal than the previous generations.