(CNN) -- Standing on the spot where 50 years earlier the Rev. Martin Luther King Jr. made "I have a dream" the clarion call of the civil rights movement, a broader call for equality rang out Saturday. Thousands rallied at the National Mall to mark the 50th anniversary of the historic August 28, 1963, March on Washington. Leaders from civil rights, religious and civic organizations paid tribute to those who fought and continue to fight for racial equality, but the slate of demands today has expanded to other hot-button issues. Income inequality, discrimination based on sexual orientation and mistreatment of immigrants were all themes espoused by the dozens of speakers.
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Two of Martin Luther King Jr.'s children will speak at event
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Obama, former presidents Clinton, Carter headline a second march Wednesday
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March passes King Memorial
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Al Sharpton: Marchers want action, not nostalgia
"While I'm elated that we've come today to march on @placeholder, we must not only march on Washington.