Every summer, in the village of Erriadh, near the city of Djerba in Tunisia, artists are invited to paint graffiti at Djerbahood, changing the walls for good. Created discreetly in 2014, the festival bloomed into the most vibrant urban art event in the whole of North Africa, putting Tunisia on the map of world graffiti. According to Mehdi Ben Cheikh, a gallery owner and the organiser of Djerbahood, the fact that the village has 2,000 years of historyis an inspiration for the 150 street artists he invites to express themselves, artists of 34 different nationalities. “For those who knew Tunis be…