The labor camps in Norway and in other areas conquered by the Germans were often as bad as the "Nacht und Nebel" camps, where political prisoners in particular would "disappear." Resistance movements arose in countries occupied by Nazi Germany. Executions of captured resistance member were counterproductive because they hardened public opinion. The "Nacht und Nebel" camps would keep the prisoners' relatives and other people unaware of their fate. This system was used against resistance members both in Germany and in occupied areas. In addition, the camps constituted an important economic base for the SS-dominated state. The expenses for labor were very small and the labor supply was almost unlimited.Jovanović, Cveja. 1985. Flukt til friheten: Fra nazi-dødsleire i Norge. Oslo: Gyldendal.
