British Prime Minister David Cameron has appeared before the British parliamentary hearing to face questioning over the phone-hacking scandal enveloping the Rupert Murdoch media empire and causing an upheaval in British politics. Cameron’s appearance comes one day after Murdoch and his son James Murdoch testified for the first time since the scandal blew open earlier this month. Under questioning from British parliamentarian Jim Sheridan, the elder Murdoch refused to accept responsibility for the scandal. Murdoch’s testimony was interrupted by a protester who attempted to smear him in the face with a paper plate covered in shaving foam.