South Koreans have reacted with joy and disbelief to the historic best picture Oscar for Parasite, good news that came as their country struggles to guard against a new virus and counter North Korea's nuclear threat.Director Bong Joon-ho's movie - about the widening gap between rich and poor - became the first non-English-language film to win Hollywood's biggest prize, prompting celebrations in South Korea.Parasite won the Oscar for best picture and three other awards, with one film fan suggesting the feat should be recognised with a public holiday.
