Violence flares in Northern Ireland
Rioters set fire to a hijacked bus and lobbed gasoline bombs at police in Belfast Wednesday. Others threw bricks and fireworks over a concrete wall that divides Protestant, British loyalist neighborhoods from Catholic, Irish nationalist parts of town. Tensions have been on the rise since Britain's exit from the European Union has upset Northern Ireland’s unsteady political balance. The World’s Carol Hills speaks with Belfast City Councillor Matthew Collins, who was among those on the streets calling for calm.