* Headlines for August 28, 2008 * In Historic Move, Democrats Nominate Obama as Presidential Nominee * Actor, Activist Danny Glover on Challenges for Popular Movements in an Historic Election Year * New Orleans Mayor Ray Nagin Walks Out of Screening of Katrina Documentary "Trouble the Water" * EXCLUSIVE: House Oversight Chair Henry Waxman Calls for Cancellation of Blackwater's Contract in Iraq * Biden Accepts Democratic VP Nomination * Ralph Nader on the Democrats' Corporate Ties, the Silencing of Third Parties, and Why Biden is the "MasterCard Senator" * Iraq Veterans Against the War Lead Thousands in Protest March to Democratic Convention * Melissa Harris-Lacewell Urges Obama to Draw on Political Rhetoric of African American Women Like Hamer, Chisholm & Jordan