Former New York City mayor David Dinkins greets US President Barack Obama at the 20th anniversary National Action Network Gala April 6, 2011 at a hotel in New York City. The National Action Network is a coalition of civil rights groups headed by Reverend Al Sharpton. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Photos: National Action Network Gala