The “Soul of a Nation” exhibition, which opened last week at Tate Modern, offered Free Thinking (12 July) a welcome opportunity to explore some of the connections between black American art in the age of Eldridge Cleaver and Angela Davis and the UK’s very own late 1960s and 1970s Black Panther movement. The British Film Institute’s Gaylene Gould came hotfoot from the Tate, and there were interesting contributions from the poet Sandeep Parmar. But the absolute highlight of Rana Mitter’s round table was his sit-down with the veteran writer-activists Linton Kwesi Johnson and H.O. Nazareth.