"LAST week, the Senate majority leader, Harry Reid, found himself in trouble for once suggesting that Barack Obama had a political edge over other African-American candidates because he was “light-skinned” and had “no Negro dialect, unless he wanted to have one.” Mr. Reid was not expressing sadness but a gleeful opportunism that Americans were still judging one another by the color of their skin, rather than — as the Rev. Dr. Martin Luther King Jr., whose legacy we commemorated on Monday, dreamed — by the content of their character."