AN ORGANISATION set up to oversee the BBC has defended its coverage of Twelfth parades.The BBC Trust rejected a viewer's complaint about the corporation's coverage of last year's July 12 parade in Belfast.For the past 50 years the BBC has covered the Orange Order's annual parades across Northern Ireland and it now provides live coverage of the large Belfast event.The unknown complainant argued that this "normalises sectarianism".The complaint also claimed it was "not reasonable for a state broadcaster to provide uncritical promotional coverage of an event that contributes extremely negatively to community relations".Although the main Twelfth parade in Belfast passed off without incident, trouble did break out in other parts of the city later in the day.After first contacting the BBC's editorial complaint unit, the issue was later referred to the trust for investigation.In a report published earlier this week the trust found "that due impartiality had been achieved" through both coverage of the main parade and the trouble later that day."The committee noted that in response to the appeal, BBC Northern Ireland had supplied examples of content elsewhere in its output which might demonstrate how due impartiality in dealing with the controversial aspects of July 12 was achieved," the report said.