K-pop powerhouse BTS has made their comeback as a group with a highly anticipated album “Arirang” following nearly four years of hiatus. CNN’s Hanako Montgomery describes the atmosphere from Seoul, where BTS fans,

SEOUL, March 21 — South Korea shut down the heart of Seoul today for a comeback concert by Kpop supergroup BTS, as authorities prepare for an estimated 260,000 fans to flood the city’s streets and mil...