North Korean Cheerleaders at the Winter Olympics

Well, just about less than 40 years ago, when I was a little boy in China, we were educated in that way too: Orchestrated greeting to some foreign VIPs visiting the town or some national/international sports games, or even some political parade (yes, we were even allowed to take part in the parades organized by the communist party then). So this is really not something strange to Chinese like me.