1. Both pick the nose of rock credibility and flick rolled-up bogies at its established figureheads.

2. The Royal Family is all about serious responsibilities: pomp and circumstance, figureheads for the land of hope and glory.

3. They traced their descent from al-Abbas, the uncle of Muhammad, and came to power by defeating the Umayyads.In 862 the Abbasids moved the caliphate from Damascus to Baghdad, where it achieved great splendour.From the 10th century Abbasid caliphs ceased to exercise political power, becoming religious figureheads.