Comedian Rosie O'Donnell has lashed out at Donald Trump, calling the former president a "moron" and "the worst thing that ever happened" as she watched his press conference on Thursday.

Republican presidential nominee Trump spoke for about an hour during the event held at his Mar-a-Lago property in Florida. At one point, he bragged about his rally crowds in comparison to Vice President Kamala Harris, who is now the Democratic candidate following President Joe Biden's announcement that he would not be seeking reelection.

Trump also said during the press conference that his speech before supporters on January 6, 2021—moments before some of those supporters sieged the U.S. Capitol—was bigger than the crowd that Martin Luther King Jr. attracted while delivering his iconic 1963 "I Have a Dream" speech at the Lincoln Memorial in Washington, D.C.

"If you look at Martin Luther King, when he did his speech, his great speech, and you look at ours, same real estate, same everything, same number of people. If not, we had more," Trump said. "And they said he had a million people, but I had 25,000 people. And I'm OK with it, because I liked Dr. Martin Luther King."

From left: Donald Trump speaks on August 8, 2024, in Palm Beach, Florida; Rosie O'Donnell smiles on February 19, 2023 in Pasadena, California. The comedian branded the former president a "moron" as he spoke at... From left: Donald Trump speaks on August 8, 2024, in Palm Beach, Florida; Rosie O'Donnell smiles on February 19, 2023 in Pasadena, California. The comedian branded the former president a "moron" as he spoke at a press conference on Thursday. Joe Raedle/Getty Images;/Faye Sadou/MediaPunch/IPX via AP

O'Donnell, who is a frequent critic of Trump, took to TikTok to share a video as the former president spoke to reiterate her disdain for the onetime real-estate mogul.

"Are you watching this moron speak?" O'Donnell said in the seconds-long clip as Trump's voice could be heard in the background. "Can he form a coherent sentence? He is the worst thing that ever happened—period. And he's just babbling like an incoherent a******. He's like [Marvel villain] Doctor Doom. He's the worst thing."

After briefly pausing to listen to Trump, A League of Their Own star O'Donnell added:
"Oh, you know what, he just lies, lies, lies. I am done with Donald Trump. Let's be done with Donald, OK? Done with Donald."

Making her feelings about Trump all the more clear, O'Donnell captioned the clip: "DONALD IS DONE. #NEVERTRUMP."

Newsweek has contacted a representative of Trump via email for comment.

The Republican's news conference on Thursday was his first in months, marking the first time the former star of The Apprentice has addressed supporters since Harris announced her running mate, Minnesota Governor Tim Walz.

The hourlong conference was filled with Trump's familiar attack lines against his political opponents and repeated falsehoods about the 2020 presidential election, which the former president still baselessly claims was rigged against him.

Trump told reporters at one point that "nobody was killed" during the January 6 Capitol attack. A total of five people died of various causes after the crowd broke its way into the building where Congress was certifying Biden's victory, including Ashli Babbitt, who was fatally shot by Capitol Police as she breached the building. Capitol Police Officer Brian Sicknick died a day after the attack due to injuries sustained during the chaos.

Meanwhile, O'Donnell and Trump have been engaged in a public feud that began in 2006 when the comedian criticized him on ABC's The View, which she co-hosted at the time.

O'Donnell had slammed Trump for not firing Miss USA winner Tara Conner, who admitted to drug use and underage drinking. The Apprentice star later responded by calling O'Donnell "a loser" and "fat."

During a segment on The View, O'Donnell said she didn't "enjoy" Trump, alleged that he was actually bankrupt, and described him as a "snake oil salesman on Little House on the Prairie."

At the time, Trump rebuked her statements, saying she was "a woman out of control."

"You can't make false statements. Rosie will rue the words she said," he added. "I'll most likely sue her for making those false statements—and it'll be fun. Rosie's a loser. A real loser. I look forward to taking lots of money from my nice fat little Rosie."

The pair have taken regular shots at each other over the years.

O'Donnell has called the former president "the dumbest human living" and a "creepy fascist." Trump, who is known for attacking those he disagrees with on a regular basis, has called O'Donnell a "mentally sick woman, a bully, a dummy and, above all, a loser" and someone with "no talent and no persona."

In August 2022, O'Donnell said that people who continue to support Trump are "willfully blind," further branding the one-term president "the worst person to ever hold that office."

"So I think America has come to understand his true essence, and he doesn't have quite the following that he used to, and people have woken up to the illusion of Donald Trump," she said. "Because that's what it was—an illusion created by Mark Burnett on The Celebrity Apprentice that he was somehow some sort of successful businessman, which he never was.

"He got all his money from his dad, who was a slumlord, and his company was mostly logo-slapping, not building."

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