Democratic Republican Party (South Korea) combination of state and corporate chaebol power pioneered by the party continues to be deeply built into the foundations of the South Korean economic system. Following the promulgation in October 1972 of the Yushin Constitution, which implemented numerous authoritarian centralizing measures such as the direct appointment of a third of the National Assembly by the President, the DRP assumed an unprecedented level of political power. For the next eight years, South Korea was essentially a one-party state ruled by the DRP. After Park's assassination on 26 October 1979 and the seizure of power by Chun Doo-hwan in the coup d'état
Propaganda in South Korea of attacks by North Korea including the sinking of the South Korean navy frigate, ROKS "Cheonan". Popular South Korean films often show reunification themes with friendships or family ties across the north and south division. The film "Joint Security Area" (2000) was the highest grossing Korean film up to that time. The movie depicted a friendship between soldiers from the north and south along the DMZ. The popular war movie, "Tae Guk Gi", from 2004 depicted close brothers divided as they are caught in the Korean War. South Korea broadcasts radio messages toward North Korea with news and propaganda themes.