Petrol bombs, bricks and torching: Why are there riots in Northern Ireland?

Why is there violence and anger in Northern Ireland? Why is it young people that are taking to the streets and could this be the end of the Good Friday agreement? <br /><br />In this episode, host Dermot Murnaghan hears from Kevin Scott, who has been photographing the riots for the Belfast Telegraph, and Sky News senior Ireland correspondent David Blevins explains what’s triggered young people to take to the streets in loyalist areas.