Sen. Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (D-Mass.) has a warning for President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance 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.