Thousands gathered under gray skies in Washington, D.C., on Wednesday to mark the 50th anniversary of the 1963 March on Washington.

They gathered in the exact same spot where the Rev. Dr. Martin Luther King Jr. delivered his "I Have a Dream" speech, and many of the same them

Standing on the spot where Martin Luther King Jr. famously urged Americans not to judge each other by the color of their skin, President Obama said Wednesday that Americans must use the example of the civil-rights marchers of 50 years ago to press for his brand of economic justice for the middle class.

“We must remind ourselves that the measure of progress for those who marched 50 years ago was not merely how many blacks could join the ranks of millionaires

President Obama stepped on Wednesday into the space where the Rev. Dr. Martin Luther King Jr. once stood and summoned his iconic dream of a colorblind society in a celebration of a half-century of progress and a call to arms for the next generation.