Katie Couric's Notebook: Obama's Dream

History will be made tonight in Denver. Exactly 45 years after Martin Luther King Jr. stood at the Lincoln Memorial before a jam-packed Washington Mall, Barack Obama will take the stage at a crowded football stadium to accept his party's nomination.

Discrimination and racial violence were rampant in 1963, when Dr. King talked about his dream. Blacks had the right to vote, but often didn't, because of intimidation. Some public places were still designated, "for whites only."

We've come a long way, but the journey is not over. One candidate's success doesn't necessarily translate into equal opportunity for all. We're sadly not always judged by the content of our character.

Even Rev. King probably never imagined that an African-American child, then just two years old, would have his dream realized as the democratic nominee for president of the United States.