Hillary Clinton had an angry confrontation with an activist who on Thursday accused her of taking money from the fossil-fuel industry.

Clinton was shaking hands with supporters following a campaign rally at SUNY Purchase in New York when she was confronted by Greenpeace USA activist Eva Resnick-Day.

"Thank you for tackling climate change," Resnick-Day can be heard saying in a video from the interaction. "Will you act on your word to reject fossil-fuel money in the future in your campaign?"

The question clearly annoyed Clinton, who fired back at Resnick-Day, pointing her finger close to the activist's face.

"I have money from people who work for fossil-fuel companies," Clinton said, as Resnick-Day began to speak over her. "I am so sick of the Sanders campaign lying about me. I'm sick of it."

Earlier at the rally, a group of protestors interrupted Clinton's speech by shouting "She wins, we lose" in unison.

"I know the Bernie people came to say that. We're very sorry you're leaving," Clinton said as the group was being escorted out of the rally.

According to the Center for Responsive Politics, a nonpartisan nonprofit that tracks money in politics, Clinton has received $307,561 in contributions from people in the oil and gas industry. Sanders has received $54,060 from people in the same industry, the center reports.

Watch video of the confrontation here: