The day after the 2008 election of Barack Obama, our first African-American president, it is a truly historic time to be an American. Slavery was one of the United States' original sins, practiced and tolerated even as the country declared our independence from England in 1776, and part of the national fabric for nearly a century afterwards. The violent overthrow of Reconstruction in the South and imposition of Jim Crow laws relegated most black Americans to second-class citizenship for...