Story highlights Bernie Sanders is highlighting his previous support for two civil rights icons as he woos African-American voters in South Carolina

Sanders and Hillary Clinton continue to battle over the black vote in South Carolina

Reno, Nevada (CNN) Bernie Sanders is highlighting his previous support for two civil rights icons as he woos African-American voters in South Carolina.

Two videos released Saturday by the Vermont senator feature Martin Luther King Jr. and the Rev. Jesse Jackson, who Sanders endorsed for president in 1988 back when he was the mayor of Burlington, Vermont.

"Tonight, many of us are going to give our support to a candidate for president who has done more than any other candidate in living memory to bring together the disenfranchised, the hungry, the poor, the workers who are being thrown out of their decent-paying jobs and the farmers who are being thrown off of their land," Sanders said back then in a speech supporting Jackson.

"Ladies and gentlemen, I would like to place for nomination this evening the name of one of the great leaders of our time and a man who has waged the most courageous and exciting political campaigns in the modern history of this nation. I place for nomination, with a great deal of personal pride, the name of Jesse Jackson," Sanders says in the clip.

The civil rights leader, who Sanders also supported in 1984, eventually won the South Carolina and Vermont caucuses in 1988. He eventually finished second to then-Massachusetts Gov. Michael Dukakis for the Democratic nomination.

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