Trump attacks CNN's Don Lemon over debate question

President TrumpDonald John TrumpWarren unveils Native American policy plan Live-action 'Mulan' star spurs calls for boycott with support of Hong Kong police Don't let other countries unfairly tax America's most innovative companies MORE took aim at Don LemonDon Carlton LemonCNN's Don Lemon sued by Hamptons bartender over alleged assault Scarborough blasts 2020 Democrats for attacking Obama's policies more than Trump's Lemon raises Trump's 'racist rhetoric' to candidates after president's criticism 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!”

Lemon, one of three moderators of Tuesday night’s primary debate, posed a question to Sen. Amy KlobucharAmy Jean KlobucharNative American advocates question 2020 Democrats' commitment Biden, Sanders, Warren support dips in new poll 2020 Democrats release joint statement ahead of Trump's New Hampshire rally MORE (D-Minn.), a White House hopeful, about Trump voters who “prioritize the economy over the president’s bigotry.”

“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 CummingsElijah Eugene CummingsOvernight Health Care: Planned Parenthood to leave federal family planning program absent court action | Democrats demand Trump withdraw rule on transgender health | Cummings, Sanders investigate three drug companies for 'obstructing' probe Democratic Women's Caucus calls for investigation into Epstein plea deal Cummings, Sanders investigate three drug companies for 'obstructing' congressional 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.”