Reporters tell their stories: in this edition, Carrie Gracie travels to China's most troubled region Xinjiang - it's in the midst of a crackdown on what the authorities describe as 'terrorism driven by religious extremism'. Fergal Keane, just back from Ukraine, examines the circumstances which led to one of Europe's bloodiest conflicts in decades. Mike Wendling's in the United States where a campaign to persuade the Washington Redskins football team to change its name is gathering pace. Will Ross is in north eastern Nigeria where bows and arrows, magic and ancient hunting rifles are now being used in the battle against the Boko Haram jihadists. And David Mazower's at a festival in Poland where it's clear a growing number of Poles feel profound loss about the Jewish nation in their midst which was ripped apart in the Second World War.