DC is about the history of film making in North Korea while NLKC is about the history of film making in South Korea.
North Korea is a closed society and its leader has a lot of say on what is shown in films. They encourage people to be nationalistic and is very pro-military. South Korea had very strict censorship too at one time but things changed after Seoul held the Olympics in 1988. The artistic freedom given to the filmmakers coupled with the screen quota system that forces cinemas to screen a certain number of Korean films per year has led to the huge commercial success of Korean films today.
Liked the large number of film clips shown in the two documentaries and the interviews with the directors, actors and actresses! Some of the directors featured like Im Kwon Taek, Kim Ki Duk and Hong Sang Soo are my favorite directors and I gained a better understanding towards their films when they explained their rationale of doing certain things.