An off-duty firefighter has been arrested in Hong Kong after surrendering to police over alleged common assault, the South China Morning Post has learned, following a viral video showing him shoving and shouting at a young couple in a Mong Kok shopping centre. A source familiar with the matter told the SCMP on Monday that the 48-year-old man, who said he works as a firefighter, turned himself in at Mong Kok police station on Sunday, accompanied by his wife. “The arrestee admitted that he had...