The Documenta festival, a contemporary art exhibition that usually takes place every five years in Kassel, Germany, is currently in Athens. Its presence there isn’t uncontroversial. The role of the art market in gentrification, the festival’s preference for established or dead artists, the spectacle of a wealthy German institution descending on a city that has been at the centre of economic and refugee crises in recent years – all this has drawn criticism. The curators have made some effort to engage with the political context, but not everything has gone to plan: a collaboration between the artist Roger Bernat and an LGBT refugee group foundered when the participants stole the exhibit in protest at what they saw as exploitation.