South Korean protesters demand president Yoon step down: Video

South Korea's opposition moved to impeach President Yoon Suk Yeol on Wednesday after his extraordinary but short-lived imposition of martial law that brought thousands of protesters to the streets. Yoon's shock bid to suspend civilian rule for the first time in over four decades before being overturned by lawmakers in a night of drama plunged South Korea into deep turmoil and alarmed its close allies.