President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE took aim at Don Lemon Don Carlton LemonCNN's Don Lemon: 'Blow up the entire system' remark taken out of context CNN's Lemon: 'We're going to have to blow up the entire system' if Democrats win back White House, Senate Scaramucci to Lemon: Trump 'doubling down' on downplaying virus 'should scare' viewers MORE Wednesday, calling him “the dumbest man on television” over a question the CNN host asked during Tuesday night’s Democratic presidential debate.

"CNN’s Don Lemon, the dumbest man on television, insinuated last night while asking a debate ‘question’ that I was a racist, when in fact I am ‘the least racist person in the world.’ Perhaps someone should explain to Don that he is supposed to be neutral, unbiased & fair or is he too dumb (stupid} to understand that,” Trump tweeted.

"No wonder CNN’s ratings (MSNBC’s also) have gone down the tubes - and will stay there until they bring credibility back to the newsroom," he added. "Don’t hold your breath!”

....or is he too dumb (stupid} to understand that. No wonder CNN’s ratings (MSNBC’s also) have gone down the tubes - and will stay there until they bring credibility back to the newsroom. Don’t hold your breath! — Donald J. Trump (@realDonaldTrump) July 31, 2019

Lemon, one of three moderators of Tuesday night’s primary debate, posed a question to Sen. Amy Klobuchar Amy Klobuchar3 reasons why Biden is misreading the politics of court packing Social media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight MORE (D-Minn.), a White House hopeful, about Trump voters who “prioritize the economy over the president’s bigotry.”

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“There are people that voted for Donald Trump before that aren't racist; they just wanted a better shake in the economy. And so I would appeal to them,” Klobuchar said. “But I don't think anyone can justify what this president is doing. Little kids literally woke up this weekend, turned on the TV, and saw their president calling their city, the town of Baltimore, nothing more than a home for rats. And I can tell you, as your president, that will stop.”

Trump is under fire for his recent attacks on Rep. Elijah Cummings Elijah Eugene CummingsBlack GOP candidate accuses Behar of wearing black face in heated interview Overnight Health Care: US won't join global coronavirus vaccine initiative | Federal panel lays out initial priorities for COVID-19 vaccine distribution | NIH panel: 'Insufficient data' to show treatment touted by Trump works House Oversight Democrats to subpoena AbbVie in drug pricing probe MORE (D-Md.), whom he called a “brutal bully” and a “racist” while slamming the House Oversight and Reform Committee chairman's Baltimore-area district as “rat and rodent infested.”

The president also faced backlash in recent weeks for his comments about a group of minority progressive congresswomen, whom he told to “go back” to their home countries, even though all four are U.S. citizens.

Despite many accusing him of being a racist, Trump insisted Tuesday that he is the “least racist person anywhere in the world.”