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Author and academic Benjamin R. Barber’s comments were outed after a hidden-camera video of him speaking at a fundraiser for North Carolina Senate candidate Deborah Ross, was released on Wednesday. At the event on September 19, he also appeared to liken black Republicans to “Sonderkommandos”, who he described as “Jewish guards who, in effect, helped murder Jews.” The heavily edited footage, released by Project Veritas - a conservative group that conducts undercover investigative reports to expose misconduct, filmed a conversation between one of its reporters and Mr Barber.

PROJECT VERITAS•GETTY Clinton and Democratic donor Benjamin R. Barber was caught racially abusing black voters

So blacks who are helping the other side are seriously f***** in the head Benjamin R. Barber

In the clip Mr Barber used the analogy: “Do you know the Sonderkommandos? Jewish guards who, in effect, helped murder Jews in the camps so they could live a little longer. “So there were even Jews who were helping the Nazis murder Jews.” The reporter talking to him responds by saying: “Same thing?” Mr Barber appears to shrug and then said: “So blacks who are helping the other side are seriously f***** in the head. They’re only helping the enemy who want to destroy them.

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“Maybe thinking that if I help them maybe it’ll be different, maybe I’d get off ok or somehow I’d save my race by working for the murderers.” At one point in the video Ms Ross also compared voter ID laws to racist Jim Crow laws in the South – which enforced racial segregation – before the civil rights movement had them abolished. Mr Barber, a Rutgers University professor emeritus and City University of New York senior research scholar, served as an informal consultant on civic affairs during Bill Clinton’s presidency, wrote a book about the Clinton administration and has since donated to Mrs Clinton’s presidential bids in 2008 and 2016.