It has been a big week for racism, sadly, and for those who do nothing about it. This weekend sees an awareness drive by Kick It Out!, the body set up to combat racism in football. So it was appropriate that John Barnes should appear on Who Do You Think You Are? (BBC1, Wednesday). The Jamaican-born footballer was targeted by English crowds, and the photograph of him backheeling a banana off the pitch became iconic. Barnes was to find anti-colonialist activists among his ancestors, but he also found a man who incurred the wrath of a black figurehead. His family history proved almost as labyrinthine as that legendary mazy dribble through the Brazilian defence.