Publishing has failed to deliver on its promises after Black Lives Matter. True diversity requires a lasting shift Publishing has failed to deliver on its promises after Black Lives Matter. True diversity requires a lasting shift A World Book Day question: which children’s author is name-checked in Stormzy’s song Superheroes (and appears in the video for Mel Made Me Do It ) and Tinie Tempah’s Written in the Stars ? The answer, as a generation of readers will know, is former children’s laureate