I found this article (2005) http://news.bbc.co.uk/1/hi/world/asia-pacific/4157121.stm
that discussed a campaign for men to get short haircuts - which fits socialists lifesytle. The campaign stressed that longer hair "consumed a great deal of nutrition" thus robing the brain from energy. the regime was considerate enough to allow men over 50 to keep seven centimeters of hair to cover balding- perhaps thats the reason Kim Il Sung was excluded from the new haircut recommendations.
Another show was created that followed people who did not react correctly to this new hairstyle. The TV show actually singled out individuals revealed their names, addresses and criticized them for their appearance. This was a major shift from usual TV reports which only portray and enhance individuals who are a positive example to the regime.