On a blue and yellow background, the graffiti artist retouches a spray-painted image of the half-man, half-shark statue of King Behanzin, one of the stolen treasures returned to Benin by France late last year. The image is just one by 26 local and international graffiti artists who have created a mural depicting Benin’s history and culture stretching more than one kilometre along a wall in Benin’s main city of Cotonou. Their objective is to eventually create the largest mural fresco in the world as part of a festival under the theme of “New Benin”. “To create the Benin of the future, we must k…