Entrepreneur Turns Beirut Slum Into Vast Canvas

He left behind his notorious Beirut neighborhood of Ouzai to pursue success, but having made his money in finance Ayad Nasser is back - and he's brought artists with him. 'Ouzville' is a new and fast-growing paint-splashed creative space in the heart of a densely packed neighborhood with a tough reputation where huge murals overlook crumbling buildings. John Owens reports from Beirut.