PHILADELPHIA – MARCH 18: Democratic Presidential candidate Sen. Barack Obama (D-Il) speaks during a major address on race and politics, March 18, 2008 at the National Constitution Center in Philadelphia, Pennsylvania. Obama rejected the controversial statements by his pastor Rev. Jeremiah Wright and spoke of the need to move beyond the racial divide. (Photo by William Thomas Cain/Getty Images)
PHILADELPHIA – MARCH 18: Democratic Presidential candidate Sen. Barack Obama (D-Il) makes remarks during a major address on race, politics, and how we bring our country together at this important moment in our history March 18, 2008 at the National Constitution Center in Philadelphia, Pennsylvania. (Photo by William Thomas Cain/Getty Images)