Graffiti is the oldest and most basic of all art forms. Every city combats graffiti — some embrace it. Miami, Florida, in Dec. 2011, hosted the 10th edition of Art Basel Miami Beach, the most prestigious art show in the Americas. A section of Miami, known as the Wynnwood Arts district, where abandoned warehouses and factories have been turned into art galleries and studios, got a special lift during the Art Basel event when hundreds of artists descended on the area to transform a rundown part of the city into vibrant works of art.