Dancing in the streets with Rashaad Newsome, Craig Robins and fashionistas take a walk on the style side, and more gossip from Art Basel in Miami Beach

Speculation in art is taken for granted today, so does art still have a higher purpose? What is its role in these troubling, dangerous times? On 28 October, The Art Newspaper celebrated its 25th anniversary with an investigation at the British Museum of what art is for. A famous lawyer interrogated the witnesses for art, while the museum’s director played the part of the judge and summed up at the end. This is a shortened version of what they said