A continuous live reading of Marx’s Das Kapital has been given centre stage by Okwui Enwezor, the Nigerian curator of this year’s Venice Biennale, in his international exhibition, “All the World’s Futures”. It’s a performance that sets the scene for a fifty-sixth Biennale unflinchingly focused on the deep divisions in global society. As Biennale president Paolo Baratta put it at the London press launch: “We are negotiating an age of anxiety”. At the same event, a journalist asked what plans the Holy See had for its pavilion this year, following its much-discussed Biennale debut in 2013. Not having been briefed on the subject, Baratta extemporised by suggesting that the Vatican could stage a continuous reading of the Bible. It was a good joke