North Korea why is it pitch black at night http://www.bbc.co.uk/programmes/p051y35f?

Because it's a terrible country.

Jong Un Kim insists that anti-air-raid tactics are practiced every night. I'd say he knows exactly where he's leading them.

look at south korea all lit up while north korea is dark and I know which part of korea would like to live in and it is not the south

They want every one to know were Kim is. It is the lit up place.

So all the dogs and cats can hide at dinner time.

우리는 밤에 잠을 자는데 빛이 필요 없다.

so they can sleep well?