Obama notes ‘tragic’ US past [Note: These are excerpts from an article that appeared on July 28th. I searched but did not find it posted] American history's "sad" aspects require action, the senator tells cheering journalists... "There's no doubt that when it comes to our treatment of Native Americans as well as other persons of color in this country, we've got some very sad and difficult things to account for," Obama told hundreds of attendees of UNITY '08, a convention of four minority journalism associations. "I personally would want to see our tragic history, or the tragic elements of our...