Landmark moment as Northern Ireland gets Sinn Fein leader

As Michelle O'Neill descended the marble staircase in Northern Ireland's parliament building on Saturday, she exuded confidence and composure. While a brief smile graced her lips in response to the applause from supporters, her serious demeanor conveyed the solemnity of the occasion. The party she represents, Sinn Fein, was shaped by the decades-long, bloody struggle of Irish nationalists.