Two black candidates running for the Democratic presidential nomination claim Joe Biden — who served as vice president for America’s first half-black, half-white president, Barack Obama — is racist, with one claiming on Sunday that his views are causing “pain” nationwide.

Before the first Democratic debates last week, Biden said the death of bipartisanship in Congress has led to gridlock. But he said in his time in the Senate, he was actually able to work with everyone, even segregationist lawmakers.

“I was in a caucus with James O. Eastland,” Biden said, referring to a Mississippi senator who served for more than 35 years and opposed civil rights. “He never called me ‘boy’; he always called me ‘son,’ ” he said at a New York City fundraiser, according to a pool report from the event.

“Well, guess what? At least there was some civility,” Biden said, adding that he also worked with Georgia Sen. Herman Talmadge, another segregationist Democrat. “We got things done. We didn’t agree on much of anything. We got things done. We got it finished. But today, you look at the other side and you’re the enemy. Not the opposition, the enemy. We don’t talk to each other anymore.”

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Sen. Cory Booker (D-NJ) hit Biden on Sunday, saying the presidential front runner’s words are “causing a lot of frustration and even pain” across the nation.

“We have one destiny in this nation, and right now the vice president, to me, is not doing a good job at bringing folks together,” Booker said. “In fact … he’s causing a lot of frustration and even pain with his words.”

Booker said on “Meet the Press” that Biden might not be able to “lead our country forward.”

“This is a bad culture when you can’t admit mistakes, when you can’t speak to your vulnerabilities and your imperfections,” Booker said.” “We all have them, but when it comes to difficult issues with race, if you can’t talk openly and honestly about your own development on these issues, I think it’s very hard to lead our country forward so that we can actually deal with our past and rise to a better common cause and common future.”