You are right, and it's like someone else said, a morality story. Of course violence is sometimes the answer, the ends do justify the means if the ends are important enough, etc. They are indoctrinated and brainwashed, in the purest sense of the word, into not even considering these ideas.

I hold it to be self evident that political violence is the only potential action that the people of North Korea could take to save themselves. Peaceful protest and voting, obviously, does not work. A massive mob rising up and stabbing dear leader with a dinner knife, at the cost of probably hundreds or thousands of themselves, might work.

To deny the above paragraph is incoherent. All governments are somewhere on the scale of justifiably being overthrown with violence. It is a valid option, and how tyrannical the government has to be before the option is justifiable is a matter of opinion. All unpretended shock and horror at the sentiment is either by the sheltered or by the afraid.

People know this subconsciously. How many stories of righteous revolution have we seen and cheered for? Shrek, Hunger Games, The Matrix, Braveheart, Dune, Star Wars; everyone knows these protagonists killing government officials are in the right. They will never make the connection, but they know it, and the intellectually honest will acknowledge it. Are we ruled by such different beasts than those characters are?