KFC has apologised for an app alert urging customers in Germany to commemorate a landmark Nazi outrage against Jews. It said fans should “treat themselves” on the anniversary of 1938’s Kristallnacht, which saw co-ordinated mob attacks across the country. 1 Kristallnacht, 1938, was a series of Nazi coordinated mob attacks on Jews living in Germany Credit: Getty It was known as Night of Broken Glass because of the shards littering streets after the destruction of synagogues, Jewish-owned businesses and homes. The message read: “Commemoration of Kristallnacht — Treat yourself to more soft cheese and crispy chicken. Now at KFCheese!” Sources...