U.S. Rep. Maxine Waters urged change at the "Redeem the Dream Summit."
The Democratic congresswoman spoke at the event hosted by the National Urban League marking the 50th anniversary of the March on Washington.
She says there's still more work to do, and she's ready to roll up her sleeves.
"And we must be committed to bring about change," Waters said. "What drove more that 250,000 Americans to the Lincoln Memorial 50 years ago was because they had the courage of their convictions, and they had the sense of their power to bring about change. They created the agenda. They demanded change. The question is, 'Do you feel a sense of determination and power to overcome the harm and disparities that continue to haunt us?'"
"Ladies and gentlemen, we must do this because there are those who have new tactics and clever strategies to limit our power and participation and undermine a decent quality of life in an effort to control and maintain their power," Waters added. "I think that we all do have the courage of our convictions, and we're prepared to do this work."
More than 250,000 people marched on Washington on Aug. 28, 1963, where Martin Luther King Jr. gave his famous "I Have a Dream" speech.