De Blasio blasts Trump as he launches 2020 bid: 'Every New Yorker knows he's a con artist'

De Blasio blasts Trump as he launches 2020 bid: 'Every New Yorker knows he's a con artist'
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New York City Mayor Bill de BlasioBill de Blasio2020 Democrats condemn decision not to charge officer in Eric Garner's death 2020 Democrats call Trump's tweets about female Democrats racist #RacistPresident trends amid criticism over Trump tweets MORE blasted President TrumpDonald John TrumpPompeo changes staff for Russia meeting after concerns raised about top negotiator's ties: report House unravels with rise of 'Les Enfants Terrible' Ben Carson: Trump is not a racist and his comments were not racist MORE on Thursday hours after launching his 2020 Democratic presidential campaign, saying “every New Yorker knows he’s a con artist.”

“Right now, the federal government is not on the side of working people. And that’s because Donald Trump is playing a big con on America,” de Blasio said on ABC's “Good Morning America.”

“I call him Con Don. Every New Yorker knows he’s a con artist. We know his tricks. We know his playbook,” de Blasio continued. “I know how to take him on — I’ve been watching him for decades. He’s trying to convince working Americans he’s on their side. It’s been a lie from day one.”

“Donald Trump must be stopped,” de Blasio said in a video announcing his White House bid earlier Thursday morning. “I’ve beaten him before and I’ll do it again.”

Trump, meanwhile, called de Blasio a "JOKE" in a tweet after the mayor announced his presidential candidacy, adding that Democrats are "getting another beauty" in the 2020 field.

De Blasio is a frequent critic of Trump, a New York business mogul, and held a news conference in Trump Tower on Monday to promote new regulations curbing energy use by buildings in the city.

The mayor said the Trump Organization could face fines of around $2 million per year starting in 2030 if its buildings do not reduce their carbon emissions.

He was heckled by Trump supporters during his appearance and then engaged in a heated exchange over Twitter with Eric TrumpEric Frederick TrumpEric Trump: '95 percent of this country' is behind Trump's message Trump Jr. blasts reports of Kushner feud: 'More fake news bulls---' Chicago mayor says waitress crossed 'the line' by spitting on Eric Trump MORE, the president's son.

De Blasio became the 24th candidate to jump into the already-crowded field of Democratic contenders, vowing to take on the wealthy and big corporations. 

"There's plenty of money in this world, there's plenty of money in this country, it's just in the wrong hands," he said in his campaign video.

A Quinnipiac poll from early April found that 73 percent of New York City voters said de Blasio should not run for president, compared to 18 percent who said he should.

“Good Morning America” host George StephanopoulosGeorge Robert StephanopoulosThe Hill's 12:30 Report: Trump takes gamble on North Korea 2020 Democratic candidates pan Trump's North Korea visit Ex-Bush CIA chief Hayden denounces Trump comments on Russian election interference MORE questioned de Blasio on Thursday for joining the race.

“What should the rest of the country think when so many of your fellow New Yorkers are saying 'don’t run'?” Stephanopoulos asked.

De Blasio pointed to his reelection numbers, saying “the poll that actually matters is the election.”

“New Yorkers have twice said that they wanted me to lead them,” de Blasio said. “And I think about polling, in general, it’s not where you start, it’s where you end.”