The video “Collateral Murder,” depicting a missile strike in Baghdad that killed a Reuters driver and photographer in 2007, has been viewed some 6 million times since it was posted early this month by the Web site WikiLeaks. We’ll speak with Clint Hendler, staff writer at Columbia Journalism Review, and Esther Kaplan, editor of the Investigative Fund at The Nation Institute, about the video and about WikiLeaks, a nonprofit organization that anonymously disseminates undisclosed documents and records leaked by insiders. We’ll talk about its role in shaping investigative journalism and what the impact of the “Collateral Murder” video release has been.