Following six weeks of street protests and an approval rating that plunged to just 4%, South Korean President Park Geun-hye was impeached Friday by the nation’s national assembly, signaling an ignominious end to a term that had become mired in a corruption scandal. The impeachment vote required at least 28 of Park’s fellow Saenuri party lawmakers to cross the aisle to make up the majority two-thirds of the 300-seat legislature.