" there were informers everywhere – on the military base where we lived, in the city streets, in my kindergarten. They reported to the provincial bureau of the Ministry of State Security, the Bowibu. This was the secret police. The translation doesn’t convey the power the word Bowibu has to send a chill through a North Korean. Its very mention, as the poet Jang Jin-sung put it, was enough to silence a crying child. "

― Hyeonseo Lee , The Girl with Seven Names: A North Korean Defector’s Story