clifford lee was here in 1963. >> i was inspired then. i'm still inspired by that speech. >> i have a dream that one day this nation will rise up, live out the true meaning of its creed. >> reporter: king's "i have a dream" speech inspired a movement and tens of thousands of people have come from across the nation to honor his vision. congressman john lewis says that vision includes everyone. >> it doesn't matter whether we're black or white, latino, asian, american, or native american, it doesn't matter whether we are straight or gay. we are one people. >> reporter: many came on buses, leaving home in the early morning hours to retrace the steps of this historic march. >> we're here to pay homage to that moment in time, but also to carry that forward. >> reporter: edith lee payne walked as a 12-year-old. here she is that august day, barely tall enough to see through the crowds. >> i'm honored to be here standing for those that were here before and aren't here today. >> reporter: but this is not just a commemoration. it's a call to action