Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE fumed over the lineup of attacks from speakers at the Democratic National Convention at his own campaign event Thursday.

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“I was gonna hit a number of those speakers so hard their heads would spin. They’d never recover,” he said at a rally in Davenport, Iowa, suggesting that he did exactly that with a number of his former GOP primary rivals.

“I was gonna say [Bill] de Blasio is the worst mayor in the history of the city,” he added of the New York City mayor who said in his scathing speech that Trump had made a “career out of ripping people off.”

Trump said that an unnamed Republican governor convinced him to keep his focus on his Democratic presidential rival, Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE, instead of lashing out at the speakers endorsing her.

Trump said that the governor advised: “Don’t hit down. You have one person to beat: Hillary Rodham Clinton.”

“He said, ‘Donald, you’re my friend. You’ve done something nobody’s ever done. Finish it off. Focus on Hillary Clinton. She’s crooked as hell, she’s gonna do a terrible job, it’s four more years of Obama,’ ” Trump said.