By John Stevens Keir Starmer has vowed to honour Stephen Lawrence’s legacy by ensuring all children get a chance to reach their full potential in life. The Labour leader said he wanted to smash the barriers to achievement and give kids “skills to tackle the future”. Mr Starmer visited a primary school with the murdered teenager’s mother Doreen ahead of the anniversary of his killing, which was 31 years ago on Monday. They met pupils including a boy who wants to be an architect as Stephen did. The 18-year-old was stabbed to death waiting for a bus in Eltham, South East London, on April 22, 199…