It's always fascinating to hear about the cultural structures within North Korea. The image in my head is one where 5% are comfortable party officials and 95% are starving labourers. Of course that's not true: there are intellectuals and scientists in the middle, like in any other society. A related article was posted a few months ago regarding North Korean sci-fi. Also fascinating! https://news.ycombinator.com/item?…
First, popular support for the regime is much greater than Westerners typically realize. My wild guess is that at least a third are true believers and much less than that would consider lifting a finger toward regime change. When characterizing North Korea, it is more accurate to call it a brutal society rather than a brutal regime.
Second, a large contributor to this situation is the demographic outcome of the civil war and population management afterwards. During the war, massive numbers of anti-communists were killed or migrated south, and massive numbers of pro-communists were killed or went north. On top of this segregation, the Northern regime established residence zones such that populations were relocated according to their perceived loyalty.
Third, due partly to the relocations, the northern part of the country has the population with the least love for the regime. They also have the greatest opportunity to escape, being close the China. It is often noted that North Korean refugees in China and South Korea have accents from this region. When these refugees tell interviewers that they would like to return home but can't, my interpretation is that they miss their hometowns, but fear punishment by the regime.