Democratic presidential candidate Bernie Sanders Bernie SandersMcConnell accuses Democrats of sowing division by 'downplaying progress' on election security The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters Why Democrats must confront extreme left wing incitement to violence MORE pointed to rival Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE’s acceptance of speaking fees from investment bank Goldman Sachs in Sunday’s Democratic debate.

“I don’t take money from big banks,” the Vermont Independent senator said.

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“I don’t get personal speaking fees from Goldman Sachs,” he continued to both boos and applause from the crowd in Charleston, S.C.

He went on to accuse the former secretary of State for accepting $600,000 from the financial giant in one year.

“You've received over $600,000 in speaking fees from Goldman Sachs in one year,” he said.

Knocking politicians for their ties to Goldman Sachs has been a theme in both the Republican and Democratic presidential races.

GOP presidential front-runner Donald Trump has been criticizing his closest rival, Sen. Ted Cruz (R-Texas), for taking a loan from Goldman Sachs, which employs his wife.

Sanders has repeatedly hammered Clinton for her ties to Wall Street on the campaign trail and in past debates.

“I have doubts about people receiving large amounts of money from Wall Street,” Sanders said on Sunday.