On a warm summer evening in Seoul’s Seodaemun district, more than 30 joggers and police officers in vests run alongside a stream, weaving between cyclists and passers-by. It may look like an ordinary fitness meet-up, but this is one of South Korea’s newest experiments in public safety.The joggers are part of Running Patrol, a city-supported initiative that enlists local running clubs to act as informal safety patrols. Launched on Thursday, the programme reflects a broader shift in Seoul’s...