SEOUL (Reuters) -South Korean politicians and activists criticised what they called China’s “cultural appropriation”, after a woman appearing to be wearing Korean traditional dress appeared among those representing China’s different ethnic groups during the opening ceremony of the Beijing Winter Games on Friday. China is home to around two million ethnic Koreans, half of whom live on the Chinese side of the North Korean border, and they are a recognised minority group whose language and culture are granted official protection. South Koreans have expressed ire in the past over recent Chinese cl…