South Koreans are still puzzling over why their leader declared martial law

SEOUL (AP) — Dancing and consoling hugs. Wild whoops and anguished screams. Tears, both of joy and rage. Reaction to the court verdict ousting South Korean President Yoon Suk Yeol from office Friday was a vivid window into the nation’s deep political divisions, as tens of thousands of Yoon opponents and supporters aired their feelings in downtown Seoul.

As South Korea now turns to elect a new president, that divide is only likely to harden. It will be particularly on display as both sides...