Yolanda Renee King, granddaughter of the Rev. Martin Luther King Jr. and daughter of Martin Luther King III, took the stage in Washington to deliver a message.

"My grandfather had a dream that his four little children would not be judged by the color of their skin but by the content of their character," she told the crowd. "I have a dream that enough is enough."

The 9-year-old girl then led in chanting: "Spread the word. Have you heard. All across the nation. We are going to be. A great generation"

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King III, later in a CNN interview with his daughter, talked about the power of this movement and others in recent years, such as Black Lives Matter.

“All of these movements are leading to change in this great country,” he said.

And he noted the growing power of the youth movement. They are reaching voting age. They soon will be 21 and able to run for public offices from mayor to Congress.

“The best is yet to come,” he said.

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John Lewis voices his support