Former Attorney General Eric Holder Eric Himpton HolderThe Hill's Campaign Report: Trump's rally risk | Biden ramps up legal team | Biden hits Trump over climate policy Biden campaign forming 'special litigation' team ahead of possible voting battle Pompeo, Engel poised for battle in contempt proceedings MORE on Tuesday said that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE’s rhetoric critical of the Department of Justice (DOJ) and Attorney General Jeff Sessions Jefferson (Jeff) Beauregard SessionsGOP set to release controversial Biden report Trump's policies on refugees are as simple as ABCs Ocasio-Cortez, Velázquez call for convention to decide Puerto Rico status MORE has had a weakening “effect on the institution.”

Holder, who served under former President Obama, said that he “could not have taken” attacks on him the way Sessions has taken attacks on the DOJ — and himself personally — by Trump, adding that he thinks the attorney general needs to push back.

“I could not have taken as much as he has taken. I think by taking what he has taken, he not only weakens himself as attorney general, it has an effect on the institution, and at some point, you have to say to the president, ‘no.’ You’ve got to respond to the president,” Holder said Tuesday night on CNN’s “Cuomo Prime Time.”

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“These are extraordinary things. I’ve never seen a president talk to an attorney general in the way that this president has spoken to his attorney general. But I think you have to respond in extraordinary ways, always thinking about how you’re going to protect the institution,” he added.

Trump and his allies have piled on the DOJ and Sessions ever since the attorney general recused himself from overseeing any investigation of Trump’s presidential campaign, including the one being conducted by special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE to probe possible collusion between the Trump campaign and Russia and obstruction of justice.

Trump has frequently lashed out at Sessions for the recusal.

In a June tweet, the president said he would have "picked someone else” to be attorney general if he knew that Sessions would recuse himself.

“The Russian Witch Hunt Hoax continues, all because Jeff Sessions didn’t tell me he was going to recuse himself...I would have quickly picked someone else. So much time and money wasted, so many lives ruined...and Sessions knew better than most that there was No Collusion!” Trump tweeted in June.

The Russian Witch Hunt Hoax continues, all because Jeff Sessions didn’t tell me he was going to recuse himself...I would have quickly picked someone else. So much time and money wasted, so many lives ruined...and Sessions knew better than most that there was No Collusion! — Donald J. Trump (@realDonaldTrump) June 5, 2018

Sessions has also been reported to be a target of Trump's ire behind the scenes.

Bob Woodward reported in his recently released book “Fear: Trump in the White House” that the president has mocked Sessions for his southern accent and called him “mentally retarded.”

Holder defended Sessions’s recusal, saying it was “the appropriate thing to do” and said the attorney general’s job is not to protect the president.

“I didn’t see my job as protecting the president, my job was to serve the people of the United States. But the other reality is I didn’t have to do anything to protect Barack Obama Barack Hussein ObamaMichelle Obama and Jennifer Lopez exchange Ginsburg memories Pence defends Trump's 'obligation' to nominate new Supreme Court justice The militia menace MORE, this president clearly thinks there are things he needs to be protected from and he wants his attorney general to do it, which is inappropriate,” he said.