Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) is responding to comments from fellow 2020 White House hopeful Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, who this week said the “my way or the highway” approach of her presidential campaign signaled an “angry” viewpoint.

“I am angry and I own it,” read the subject line of a Friday fundraising email from Warren's campaign.

“Over and over, we are told that women are not allowed to be angry. It makes us unattractive to powerful men who want us to be quiet,” the email read.

Warren’s email referred to backlash toward Biden and another 2020 Democratic candidate, South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE, both of whom her supporters say launched attacks on her that were sexist, CNN reported.

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Biden has since denied that he went after the fellow front-runner because she’s a woman, telling the network on Friday that "the strong women in my life are angry" but that "has nothing to do with it."

"It had to do with the fact that it started off and she said, you know, Biden is running in the wrong primary because I disagreed, disagree with her 'Medicare for All proposal,'" the former vice president said.

Biden in a Medium post on Tuesday responded to Warren’s earlier comments that suggested his reasons for opposing Medicare for All seemed like they were coming from someone “running in the wrong presidential primary,” CNN reports.

Without naming Warren specifically, Biden’s post said “these kinds of attacks are a serious problem” and “reflect an angry unyielding viewpoint that has crept into our politics.”

He added that such an “approach to politics” is “condescending” and “elitist.”