Looters carry furniture and other objects out of the Muslim Brotherhood's headquarters after it was burned down by protesters opposing Egyptian President Mohamed Mursi in Cairo's Moqattam district July 1, 2013. The Brotherhood said on Monday that armed men who ransacked its national headquarters had crossed a red line of violence, and the movement was considering action to defend itself. Hundreds of people threw petrol bombs and rocks at the building, which caught fire as guards and Brotherhood members inside the building exchanged gunfire with attackers. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: POLITICS CIVIL UNREST RELIGION TPX IMAGES OF THE DAY)