This morning I walked my granddaughter to school in a semi-rural part of the United States, as I have done every morning this week. The walk was uneventful. We admired the scenery, looked at the flora and fauna and enjoyed the sort of peaceful morning that you would expect in the American countryside. Then we arrived at the school. The school doors were not due to open until 8.25am. Outside, a large group of children had gathered, while some teachers were already entering the