about americans at school? >> they forcibly invaded us and slaughtered our people and buried them alive and killed them. >> they teach thaw the americans are the enemy and you need to shoot them to fight them? >> yes. here's where things get awkward. >> what if i told you i'm an american. do you want to shoot me too? >> yes. there are good people. we will see if you are a good person or a bad person. >> i'm a good american. don't shoot me. >> um, no. i won't shoot. >> this is the paradox of north korea. smiling young people, friendly, polite. even as they me how much they hate the united states. from their earliest years, they are told america could attack at any time. told they must prepare for the next war. in north korea, government