Hillary Clinton is sick of it!

The Democratic frontrunner gave one activist an earful when she asked about campaign donations from fossil fuel companies.

As Clinton greeted attendees at a New York rally on the campus of SUNY Purchase on Thursday, one question from the crowd struck a nerve.

When Greenpeace activist Eva Resnick-Day asked whether she would forego contributions from the fossil fuel industry, Clinton blew a gasket.

“I have money from people who work for fossil fuel companies,” she said in the face-to-face exchange caught on video.

“I am so sick of the Sander campaign lying about me,” Clinton continued while repeatedly pointing her finger in Day’s face. “I’m sick of it.”

With that, a smile returned to the former New York Senator’s face as she extended her hand to greet another attendee. Chilling. 

(Photo: Spencer Platt/Getty Images)