CLICK). This still from an IS video shows the fanatics' response. Presumably under threat of torture, David says "I would like to declare that I hold you, David Cameron, entirely responsible for my execution." After more coerced propaganda from David, another British voice - we assume the executioner's - declares "This British man has to pay the price for your promise, Cameron, to arm the Peshmerga against the Islamic State." PM David Cameron has called the murder of David Haines "an act of pure evil (CLICK)." True. So when is Government going to ban the fount of this evil: Sharia Law (CLICK)?