President Barack Obama was set to lead civil rights pioneers Wednesday in a ceremony for the 50th anniversary of the March on Washington, where Dr. Martin Luther King's "I Have a Dream" speech roused the 250,000 people who rallied there decades ago for racial equality.
Large crowds gathered at the Lincoln Memorial, where the first black U.S. president was expected to speak just after 1900 GMT the same time that King delivered his spellbinding speech.
The first march was early in the turbulent 1960s, when the South still had separate restrooms, schools and careers for blacks and whites, and racism lingered across the country. In the two years following the march, President Lyndon Johnson signed the landmark Civil Rights Act and Voting Rights Act to outlaw discrimination, and King received the Nobel Peace Prize.
Obama has said King is one of two people he admires "more than anybody in American history." The other is Abraham Lincoln. Obama will be joined by former Presidents Jimmy Carter and Bill Clinton, with thousands of people expected to attend. Oprah Winfrey, Forest Whitaker and Jamie Foxx were among the celebrities.
Obama will offer his personal reflections on the civil rights movement, King's speech, the progress achieved in the past 50 years and the challenges that demand attention from the next generation.