Sen. Elizabeth WarrenElizabeth WarrenWarren calls on big banks to follow Capital One in ditching overdraft fees Crypto firm top executives to testify before Congress Massachusetts Gov. Charlie Baker won't seek reelection MORE (D-Mass.) has a warning for President TrumpDonald TrumpHillicon Valley — State Dept. employees targets of spyware Ohio Republican Party meeting ends abruptly over anti-DeWine protesters Jan. 6 panel faces new test as first witness pleads the Fifth MORE: “Donald, you ain’t seen nasty yet.”

Warren read aloud from her new book “This Fight is Our Fight: The Battle to Save America’s Middle Class” and took questions at a town hall event in New York Friday, HuffPost reported.

Warren blasted Trump for his economic policies, saying they are hurting the middle-class Americans who voted for him.

“What Donald Trump and the Republican majority in the House and the Senate want to do to us, is they want to deliver the knockout blow to the middle class,” she said.

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She also hit him on women's rights, saying that "women's rights are not up for grabs" during the reading.

“The character of a nation is not the character of its president,” Warren said. “The character of a nation is the character of its people.”

--This report was updated on June 18 at 7:13 a.m.