Story highlights Democratic presidential candidate Bernie Sanders joins march for Voting Rights Act

The NAACP march began on August 1

Washington (CNN) Democratic presidential candidate Bernie Sanders appeared at the America's Journey for Justice rally at the Lincoln Memorial Tuesday.

The rally was the climax of a 1,000-mile march from Selma, Alabama, to Washington, calling on Congress to pass the Voting Rights Advancement Act.

"Unless we enact reform that provides easy access for all voters, we will continue to miss 30 million voters from working families. If we don't root out big money in politics, the oligarchy of the wealthy will increasingly control our government," wrote Larry Cohen, former president of the Communication Workers of America and a Sanders' adviser, on the campaign website

"Voting rights, and the other three issue areas on the Journey for Justice platform, provide a good basis for this discussion as the presidential race heats up," Cohen wrote.

Sanders spent the past weekend campaigning in the Carolinas, confronting a major challenge of his campaign: introducing himself to black voters. Though Sanders has had several speeches interrupted by Black Lives Matter protestors, he has since gained an endorsement from author and professor Cornel West.

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