Subway and Bomb Shelter
Apparently, North Korea felt the need to build a subway system that ran so deep that it doubles as a bomb shelter. When the photographer snapped this picture, the tour guide that he was with demanded that he delete the photo. They were uncomfortable with the fact that the photographer managed to capture the bomb-secure tunnel.
Farmer Children
While traveling around North Korea, it's common to see impoverished citizens. When the photographer took a photo of these children, the guides became extremely aggressive and forbid him from photographing the poor. The photographer told them that poverty is everywhere in the world, but they weren't having it.