The best art helps us to see and feel in new ways - it can challenge and provoke. Michael Rakowitz uses sculpture, installation, and site specific experiences to transmit a vision which reflects his Iraqi Jewish heritage and preoccupations which range from war to family, to food. He has made it his mission to test the boundaries of what we think of as art and has won plaudits around the world. What does his work tell us about the state we are in?(Photo: Iraqi-American artist Michael Rakowitz at the unveiling of his work, the new fourth plinth sculpture titled The Invisible Enemy Should Not Exist, Trafalgar Square, London, 2018. Credit: Getty Images)