The US-based author Teju Cole talks to Philip Dodd about a range of subjects from James Baldwin and the pressing political realities of Black Lives Matter to the creative potential of social media.Teju Cole is a photographer, art historian and writer. He was raised in Nigeria and lives in Brooklyn. His books are Open City, Every Day is For The Thief and his new collection of essays Known and Strange Things.The conversation was part of the London Literature Festival at South Bank Centre.Producer: Zahid Warley