James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE said in a new interview that while most Americans shrugged off a tweet in which 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 suggested the former FBI director should serve jail time, the president threatening a private citizen is "not normal."

In an interview with NPR, Comey warned Americans of what he says is the danger of letting Trump's more outlandish actions become normalized.

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"President Trump, I don't follow him on Twitter but I get to see his tweets tweeted, I don't know how many, but some tweets this past couple of days that I should be in jail," Comey said. "The president of the United States just said that a private citizen should be jailed."

"I think the reaction of most of us was, 'meh, that's another one of those things.' This is not normal. This is not OK," Comey added.

Comey went on to say there is a "danger" to democracy in America if voters don't respond to Trump's "threats to the rule of law."

"There's a danger that we will become numb to it, and we will stop noticing the threats to our norms. The threats to the rule of law and the threats most of all to the truth," Comey said.

"Lady Justice can't be peeking under the blindfold to see if Donald Trump wants her to convict so-and-so and not convict so-and-so. If we lose that, we've lost the rule of law, and so there's great danger in the president of the United States saying 'you should be in jail,' " Comey said.

Trump fired Comey last year over his frustration around the handing of the Russia investigation, which led to the appointment of the 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.

Mueller's team is investigating, among other charges, the possibility that Trump's firing of his FBI chief was intended to obstruct the ongoing investigation into possible collusion between his campaign and Russia.

The feud between Comey and Trump reignited last week with a string of media appearances by the FBI chief, who is promoting his memoir, "A Higher Loyalty: Truth, Lies, And Leadership."