Horrifying video shows a knife-wielding yob demanding "we're going to stab you up, give me the money" while his armed pal begins helping himself to items from the shelves. But a quick-thinking staff member leaps around the counter - smashing wine on the floor in a bid to slow down the assailants - and sneaks out of the store before pulling the door tightly shut behind. The balaclava-clad suspect then proceeds to smash the door windows with his weapon while members of the public also help... Read this story at www.thestar.co.uk , www.sunderlandecho.com