Syracuse, New York (CNN) Hillary Clinton, while being confronted Thursday by a climate activist about accepting donations from the fossil fuel industry, angrily accused Bernie Sanders' campaign of "lying" about her. 
 
 Eva Resnick-Day, an activist affiliated with Greenpeace and 350 Action, two climate organizations, asked Clinton if she will "reject fossil fuel money" from her campaign. 
 
 Greenpeace USA posted video after the exchange. 
 
 Clinton, clearly aggravated by the question, responded by raising her voice to the questioner and jabbing her finger toward the woman. 
 
 "I do not have, I have money from people who work for fossil fuel companies," Clinton said. "I'm so sick. I'm so sick of the Sanders' campaign lying about me. I'm sick of it." 
 
 This is not the first time 350 Action or Greenpeace have confronted Clinton over fossil fuel donations. The groups also questioned her on the issue during an Iowa City, Iowa, town hall in December and a Dover, New Hampshire, town hall in February. 
 
 Clinton is also routinely questioned on the rope line after events by people with pointed -- and at times aggressive -- questions. Clinton is generally able to either ignore the question or answer without getting angry. 
 
 Michael Briggs, Sanders' spokesman, did not respond to Clinton accusation that the campaign is lying about her, but stood by Greenpeace's question. 
 
 "The truth is that Secretary Clinton has relied heavily on funds from lobbyists working for the oil and gas industry," Briggs said, citing a Greenpeace article arguing that Clinton has taken donations from 57 oil, gas and coal industry lobbyists. 
 
 Nick Merrill, Clinton's spokesman, said Thursday that the Clinton campaign "has not taken a dollar from oil and gas industry PACs or corporations. The simple fact is that the Sanders campaign is misleading voters with their attacks." 
 
 The number in question, though, is donations from people who work for oil and gas companies. Under that metric, Clinton's has taken more than $300,000 from people who work for those companies, according to Greenpeace. Clinton's campaign has not received any money directly from oil and gas companies, as that would violate election law. 
 
 Merrill went on to note that "by the same metric, Bernie Sanders has taken more than $50,000 on this campaign from individuals working for oil and gas companies." 
 
 "Assuming they don't believe their own candidate is bought by the fossil fuel industry, they should stop the false attacks and do what they've claimed the campaign is about: debating the issues," Merrill concluded. 
 
 Resnick-Day, the Greenpeace questioner, said in a statement that she "was shocked and surprised at (Clinton's) reaction to my question." 
 
 "Secretary Clinton needs to listen to the people, not fossil fuel interests," Resnick-Day added. 
 
 Clinton's exchange with the activist came after a fiery event at the State University of New York at Purchase, where Clinton called out Sanders a number of times and confronted Sanders protesters who shouted her event. 
 
 Shortly into Clinton's speech, a small group of protesters stood up and yelled, "If she wins, we lose." 
 
 Clinton looked at them and said, "Oh, I know. Bernie people came to say that." 
 
 "I have earned 9 million votes in this election. I have 1 million more votes than Donald Trump and I have 2.5 million more votes than Senator Sanders," Clinton said to cheers as the protesters were escorted out. 
 
 Clinton has personally grown more frustrated with protesters in recent days, according to aides, annoyed by the fact that many of the protesters don't come to listen to proposals but are there just to disrupt. 
 
 Republicans jumped on the video of Clinton confronting the protester. American Crossroads, an anti-Clinton super PAC, sent reporters an email with the subject line, "Hillary loses temper with Greenpeace activist." The Republican National Committee called it a "testy" exchange. ||||| This is a set of web collections curated by Mark Graham using the Archive-IT service of the Internet Archive. They include web captures of the ISKME.org website as well as captures from sites hosted by IGC.org.These web captures are available to the general public.For more information about this collection please feel free to contact Mark via Send Mail ||||| In response to a question from an activist at a rally in Harlem, Democratic front-runner Hillary Clinton said she is "so sick of of the Sanders campaign lying." Here's some background on that incident. (Sarah Parnass/The Washington Post) 
 
 NEW YORK — A question about fossil-fuel-industry donations to her campaign unleashed a rare flash of anger from Hillary Clinton on the rope line in New York on Thursday. 
 
 The moment was recorded by an activist, whom Greenpeace identified as Eva Resnick-Day, who sought to pressure Clinton about the roughly hundreds of thousands of dollars her campaign has received from individuals with ties to fossil-fuel industries. 
 
 "Will you act on your word to reject fossil-fuel money in the future in your campaign?" Resnick-Day asked after thanking Clinton for addressing climate change in her campaign. 
 
 Apparently peeved, Clinton fired back flashing a frustration that had begun to show earlier in the rally when a large group of Sanders supporters interrupted her speech. 
 
 "I have money from people who work for fossil-fuel companies," Clinton said. 
 
 As Resnick-Day tried to respond, Clinton interrupted her pointing her finger for emphasis: "I am so sick -- I am so sick of the Sanders campaign lying about me." 
 
 "I'm sick of it," she added before moving on to shake another hand. 
 
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 The Sanders campaign has said that they will hammer Clinton for her ties to the fossil-fuel industry through campaign donations. 
 
 And Greenpeace, a progressive environmental organization, released a recent report showing that Clinton had also received more than $1.2 million in donations bundled -- or fundraised -- by lobbyists for fossil-fuel industry on her behalf. The organization also tied millions more donations tied to the fossil-fuel industry to the super PAC supporting Clinton, Priorities USA Action. 
 
 She has not accepted any direct contributions from oil and gas companies. 
 
 But Resnick-Day said in an interview with The Washington Post that she has no ties to the Sanders campaign and has not committed to any candidate in the race. She and other Greenpeace activists have confronted Clinton several times on the rope line with the same question in the past. 
 
 "I think that she has been annoyed to continually be asked the question on the trail and didn’t really want 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." 
 
 "I didn’t like that assumption," she added. 
 
 Resnick-Day said Greenpeace has asked all of the presidential candidates to sign a pledge to reject money from the fossil-fuel industry and to pursue campaign finance reform. Sanders has signed the pledge but Clinton has not. 
 
 But Clinton's tone didn't really bother her as much as her continued reluctance to sign the pledge, Resnick-Day said. 
 
 "The tone at which a candidate talks to me is not what matters to me, it's the substance of what the candidate is saying," she said. "And I'd love to see Hillary come out and take the pledge to reject fossil-fuel money, especially if she's saying she did not take any, there's no reason that she can't sign the pledge." 
 
 And another incident may have contributed to Clinton's mood. Earlier in the rally, a large group of chanting Sanders supporters interrupted Clinton's remarks and walked out prompting Clinton to fire back at them from the podium. 
 
 "As they're leaving, I just want to say I have earned over 9 million votes in this election," Clinton said, adding that she has received more than 2 million more votes than Sanders. "What I regret is they don’t want to listen to anybody else." 
 
 "What I regret is that they don’t want to hear the contrast between my experience, my plans, my vision, what I know I can get done and what my opponent is promising," she added. 
 
 In a statement, Clinton spokesman Nick Merrill said that Clinton has a "proven record" of combating climate change and fighting against fossil-fuel interests. 
 
 Merrill noted that she has released clean-energy proposals as a candidate and has called for eliminating tax breaks for oil and gas companies. 
 
 "The simple truth is that this campaign has not taken a dollar from oil and gas industry PACs or corporations," Merrill said. "The simple fact is that the Sanders campaign is misleading voters with their attacks. 
 
 "The money in question is from individuals who work for these companies," he added, noting that by the same metric, Sanders has received more than $50,000 from employees of oil and gas companies. 
 
 Merrill continued: "Assuming they don’t believe their own candidate is bought by the fossil fuel industry, they should stop the false attacks and do what they’ve claimed the campaign is about: debating the issues.” 
 
 But the Sanders campaign isn't backing down. 
 
 Michael Briggs, a spokesman for Sanders, said that Clinton's campaign has relied "heavily" on money from lobbyists working for the oil, gas and coal industries. 
 
 “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,'" Briggs said in a statement. "If Secretary Clinton wants to discuss this and other important issues she should stop stalling and agree to a debate in New York before the April 19 primary election." 
 
 The Clinton and Sanders campaigns have been deadlocked over the issue of a debate that the Sanders campaign has pushed to be held in Brooklyn, N.Y., ahead of the state's primary. ||||| In a rare heated moment on the campaign trail, Democratic candidate Hillary Clinton told a climate change activist on the rope line after an event that she is "so sick of the Sanders campaign lying" about donations from fossil fuel companies and lobbyists. 
 
 In video footage posted online by Greenpeace, shown below, the group's activist spoke to Clinton as she was greeting supporters along the rope line in Purchase, N.Y. 
 
 
 
 "Thank you for tackling climate change," the woman said. "Will you act on your word to reject fossil fuel money in the future in your campaign?" 
 
 Clinton replied: "I do not have, I have money from people who work for fossil fuel companies," Clinton replied. 
 
 When the woman followed up, asking, "and registered lobbyists?" Clinton appeared to get frustrated. 
 
 "I'm so sick!" she said. "I'm so sick of the Sanders campaign lying about this, I'm sick of it!" 
 
 Vermont Sen. Bernie Sanders, in debates and on the campaign trail, has repeatedly criticized Clinton for accepting donations from Wall Street executives, the fossil fuel industry and the pharmaceutical industry, and Greenpeace. After the incident, Sanders campaign spokesman Michael Briggs issued a statement saying Clinton has relied on funds from lobbyists working for the oil, gas and coal industry and cited a Greenpeace analysis saying that she had received $4.5 million from the fossil fuel industry. 
 
 The woman who questioned Clinton on the ropeline -- a Greenpeace activist named Eva Resnick-Day -- said she was "shocked and surprised" at Clinton's reaction and complained that Clinton wouldn't take the group's pledge to reject money from fossil fuel interests. 
 
 "We have asked Secretary Clinton multiple times to take our pledge to reject money from fossil fuel interests, yet she continues to downplay the significance of these contributions," Resnick-Day said in a statement sent by Greenpeace. 
 
 But Clinton spokesman Nick Merrill denied that Clinton has taken money from the fossil fuel industry. 
 
 "The simple truth is that this campaign has not taken a dollar from oil and gas industry PACs or corporations. The simple fact is that the Sanders campaign is misleading voters with their attacks," he charged, in a statement to CBS News. "The money in question is from individuals who work for these companies. By the same metric, Bernie Sanders has taken more than $50,000 on this campaign from individuals working for oil and gas companies. Assuming they don't believe their own candidate is bought by the fossil fuel industry, they should stop the false attacks and do what they've claimed the campaign is about: debating the issues." 
 
 CBS News' Hannah Fraser-Chanpong contributed to this report
– Hillary Clinton seemed to get genuinely angry on the campaign trail Thursday, with her anger directed squarely at the Bernie Sanders campaign. In a video from a campaign stop in Purchase, NY, Greenpeace activist Eva Resnick-Day asks Hillary Clinton if she'll "reject fossil fuel money in the future" of her campaign. "I have money from people who work for fossil fuel companies," Clinton responds. "And registered lobbyists?" the activist presses, per CBS News. "I'm so sick of the Sanders' campaign lying about me," Clinton says, raising her voice and jabbing her finger. Resnick-Day—who tells the Washington Post she isn't affiliated with the Sanders campaign—says she was "shocked and surprised" by the reaction, which came after Sanders supporters interrupted Clinton's speech. "The truth is that Secretary Clinton has relied heavily on funds from lobbyists working for the oil and gas industry," a Sanders rep tells CNN, pointing to a Greenpeace article that claims Clinton received some $300,000 oil and gas employees. The Clinton campaign "has not taken a dollar from oil and gas industry PACs or corporations" and "the Sanders campaign is misleading voters with their attacks," a Clinton rep counters. "The money in question is from individuals who work for these companies. By the same metric, Bernie Sanders has taken more than $50,000 on this campaign from individuals working for oil and gas companies. Assuming they don't believe their own candidate is bought by the fossil fuel industry, they should stop the false attacks."