Ask many Americans what first comes to mind when you mention the name of Republican presidential hopeful Rudy Giuliani and most are likely to recount the heroic image of Giuliani, covered in white ash from debris, bravely walking through rubble-filled streets of lower Manhattan moments after the towers collapsed on Sept. 11, 2001. At least that's the image most white Americans are likely to have. The man even received honorary knighthood from Queen Elizabeth II for his role in the wake of the attacks. But many blacks, particularly those who witnessed Giuliani firsthand during his two terms as mayor of...