LONDON, ENGLAND - MARCH 27:  Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge talk to young students who are taking part in a role playing lesson about the workings of a British court at Stephen Lawrence Centre in Deptford on March 27, 2015 in London, England. The centre is built in memory of 19 years old Stephen Lawrence, who was stabbed to death by a group of white youths in April 1993 as he was waiting for a bus. (Photo by Alastair Grant - WPA Pool/Getty Images)