A finger-pointing Hillary Clinton lashed out at a Greenpeace activist who pushed her buttons Thursday about donations from the fossil fuel industry.

While pressing the flesh with voters at SUNY Purchase, the Democratic front-runner was asked by Eva Resnick-Day if she would reject fossil fuel funds.

“I have money from people who work for fossil fuel companies,” Clinton said in the exchange, caught on video posted by Greenpeace.

“I am so sick of the Sanders campaign lying about me!” the enraged candidate added, pointing her finger inches from Resnick-Day’s face. “I’m sick of it!”

Resnick-Day told the Washington Post that she has no ties to the Sanders campaign and has not committed to any candidate in the race.

“I think that she has been annoyed to continually be asked the question on the trail and didn’t really want to have to deal with the question again,” the 26-year-old activist from Pittsburgh said. “I was upset that she felt that I was a Bernie campaigner, because I’m not.”

Sanders spokesman Michael Briggs said in a statement: “It’s no wonder that back in December Clinton refused to agree to stop accepting money from the fossil fuel industry when pressed at a town hall, saying, ‘I’m not going to do a litmus test on them.’”

A few minutes before the exchange with the activist, Clinton was already riled after being disrupted by a group of Sanders supporters ahead of Tuesday’s Wisconsin primary and her home state’s one on April 19.

About 20 Sanders supporters shouted, “If she wins, we lose!”

When they started to leave, Clinton snapped, “The Bernie people came to say that. We’re very sorry you’re leaving,” as the crowd chanted, “I’m with her!”

Clinton’s team accused the Vermont senator’s campaign of “misleading voters with their attacks,” saying she’s never accepted funds from oil and gas industry companies or their political action committees.

Both candidates, they said, have taken contributions from individuals who work in the industry.

“Assuming they don’t believe their own candidate is bought by the fossil fuel industry, they should stop the false attacks,” Clinton spokesman Nick Merrill said in a statement in which he said Sanders has taken $50,000 from oil and gas companies.

It wasn’t the first time Clinton has been accused of accepting donations from the fossil fuel industry.

In Iowa last year, Steve Patterson, a leader of a local climate change group, asked her if she would join Sanders and pledge to reject money from the fossil fuel industry, Politico reported.

Clinton said she was not sure she had ever accepted money from the industry, but Patterson insisted she had.

“Have I? OK, well, I’ll check on that,” she responded. “They certainly haven’t made much of an impression on me if I don’t even know it.”

Clinton’s campaign hasn’t accepted donations directly from the industry — which would violate campaign law — and she also hadn’t received contributions from PACs affiliated with the industry, Politico reported.

But she has received more than $330,000 from oil and gas industry employees.

Greenpeace recently released a report showing that Clinton had also received more than $1.2 million in donations bundled — or fundraised — by lobbyists for the fossil fuel industry on her behalf, the Washington Post reported.