On my first trip to North Korea in 1989, I made a nuisance of myself by randomly barging into private homes. I wanted to see how ordinary North Koreans actually live, and people were startled but hospitable.
The most surprising thing I found was The Loudspeaker affixed to a wall in each home. The Loudspeaker is like a radio but without a dial or off switch. In the morning, it awakens the household with propaganda. (In his first golf outing, Comrade Kim Jong-il shoots five holes-in-one!) It blares like that all day.