Northern Ireland: a referendum on reunification?

For the first time in Northern Ireland's history, the first minister is from the Irish nationalist Sinn Féin party. On taking office, Michelle O’Neill said that a referendum on whether Northern Ireland should remain part of the United Kingdom or be reunited with the Republic of Ireland could be on the cards within a decade. But will asking this question reopen old wounds, in a place scarred by violence? And how do young people in Northern Ireland see their future?