Barbed Wire Border
This barbed wire fence is used to keep intruders out of the country and to keep North Koreans in the country. They didn't want this to be photographed as it made it seem like the government was keeping people in the country against their will.
Failing Crops
Although it looks like these crops are flourishing, almost none of them are edible or decent for human consumption. The little boy in the photo is most likely the farmers' son who is out there helping his family try to make a living.