SEOUL, South Korea (AP) — The South Korean organizers of a regional rugby tournament have apologized for mistakenly playing a song embraced by Hong Kong pro-democracy protesters as China’s national anthem, an incident that sparked strong reaction from the city’s government. “Glory to Hong Kong” — whose lyrics call for democracy and liberty — was played before the men’s finals between South Korea and Hong Kong in the second leg of the Asian Rugby Seven Series in Incheon, just west of Seoul, on Sunday. Video of the song playing at the tournament went viral on social media in Hong Kong,...