A night of torched vehicles and shop looting sparked in Dublin after a knife attack outside a school was of an "extraordinary" level of violence unseen in decades, police said Friday. The violence started when a group broke through a police cordon Thursday in the area where three young children and a women who was caring for them were injured in a knife attack. Some protesters carried signs reading "Irish Lives Matter" and waved Irish flags through a neighbourhood home to a large immigrant community. One protester told AFP that "Irish people are being attacked by these scum." Ireland has...