Article Photos: Dems open convention playing defense of Obama



First Lady Michelle Obama listens to a production manager during a sound check for the Democratic National Convention in Charlotte, N.C., on Monday, Sept. 3, 2012. (AP Photo/Charlie Neibergall)

First Lady Michelle Obama listens to a production manager during a sound check for the Democratic National Convention in Charlotte, N.C., on Monday, Sept. 3, 2012. (AP Photo/Charlie Neibergall)