It's been 50 years since Dr. Martin Luther King stood on the Washingon Mall before a quarter million people and made a speech that changed the course of American civil rights history.

In the course of 16 minutes on that bright, sunny summer day, King imagined a time when  his four children will "live in a a nation in which they will not be judged by the colour of their skin but by the content of their character."

But how much of his dream been realized? The CBC's Paul Hunter went to Washington, D.C., to speak with people who were there on Aug. 28, 1963,  to find out.