"Why? Whether it’s al Qaeda Central, or two twisted, perverted, cowardly knock-off jihadists here in Boston. Why do they do what they do?”
VP Biden, speaking at the memorial service for slain MIT police offer Sean Collier - 4/24/2013
White House Chief of Staff Rahm Emanuel listens to U.S. President Barack Obama during a news conference in the Brady Press Briefing Room at the White House in Washington in this June 23, 2009 file photo.