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On August 28th 1963, hundreds of thousands of people gathered in the nation’s Capitol for the March on Washington for Jobs and Freedom.

And on Friday, several groups from Chicago are boarding buses, making the trek to commemorate the 50th anniversary of the march and Dr. King’s enduring “I Have a Dream” speech.

About 150 people from three unions — representing Chicago teachers, nurses, and letter carriers — boarded buses here at 38th and Wabash, bound for Washington DC.

They’re calling themselves the Chicago Labor Freedom Riders, and they are speaking out about a number of concerns from school closings, attacks on public services, changes to the Voting Rights Act, Trayvon Martin, ongoing violence and economic disparities.

We spoke with one woman, Carol Goldbaum, who was a student at Northwestern when she attended the March on Washington in 1963. She devoted her life to social work, and now she says she’s going back because its clear there’s more work to do.

Another group of about 50 people from the Chicago Chapter of the National Action Network are also leaving later Friday evening. They will join with activists and church groups from all over the country for a rally on the National Mall Saturday.