Over the years I must have been to dozens of exhibitions on black liberation. Some in Britain, some in Australia, some in the US and one in South Africa which had me in tears when I saw on display a “Free Mandela” sticker that I had designed for the Young Communist League in London in the 1960s. They were all about the politics and the campaigning but, this spring, the Turner Contemporary Gallery on Margate’s traditional seafront has an amazing exhibition that looks at this subject from a totally unique point of view. The exhibition looks at the way the various arts have reflected the amazing struggle of black people in the US’s southern states, particularly in the battle for civil rights.