LONDON, ENGLAND - MARCH 21: Iraqi American artist Michael Rakowitz poses next to his art work entitled 'The Invisible Enemy Should Not Exist' during the unveiling of the next two art works to be installed on the Fourth Plinth in Trafalgar Square, on March 21, 2017 at the National Gallery in London, England. Michael Rakowitz and Heather Phillipson were today announced as the two artists who have won the next commissions for the Fourth Plinth in Trafalgar Square, the designs will be unveiled in 2018 and 2020 respectively. (Photo by Carl Court/Getty Images)