"Unfortunately, when it came to the strike, she missed the heart of the story", he said in a written statement.
She is the latest Democrat to launch a campaign to become the party's presidential candidate.
"Our fight is for big, structural change", said the MA senator, who throughout her speech invoked popular policies like Medicare for All, a Green New Deal, a wealth tax, and ambitious criminal justice reform.
"When I talk about this, some rich guys scream 'class warfare!' " Warren said.
Zhou-Castro went on to say that Warren's major opponent at this point is former Vice President Joe Biden, who despite not yet declaring his candidacy, is leading the field in polling among would-be primary Democratic voters.
Ms Warren has always been a star in the progressive left, however, and she has already built a formidable nationwide campaign.
After Lawrence, Warren is set to travel north to campaign in New Hampshire before flying to Iowa for a three-stop tour across the state on Sunday - her second visit to the Hawkeye State since announcing the formation of an exploratory campaign on New Year's Eve.
Warren also apologized Wednesday afternoon for claiming she was of "American Indian" origin in a Texas Bar registration card from 1986.
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Minutes before her announcement, Trump's 202 campaign tagged Warren as a fraud.
Others cited Warren's explanation that a Native American background was part of her family lore. The decision to run marks a significant departure for Warren, who less than two years ago told her constituents in MA that she doesn't want to become president. "I'm not taking applications from billionaires who want to run a super PAC on my behalf". "The American people will reject her dishonest campaign and socialist ideas like the Green New Deal, that will raise taxes, kill jobs and crush America's middle-class".
"I'm not particularly paying attention to the noise and the distractions of any candidate, whether it's someone I support or not", she said.
Her past battles with Wall Street have brought her a large following, and she is considered to have one of the best campaign organizations of any Democrat. After proposing an "ultra-millionaire tax" that would hit the wealthiest 75,000 households in America, Ms Warren told Bloomberg News last week that she continued to "believe in capitalism" but wanted to see stricter rules to prevent gaming the system - a marked contrast with the self-described democratic socialism of Sanders.
But it remained unclear how badly damaged Warren is by a stubborn controversy over her claim to Native American roots - a claim Trump has seized upon to belittle her, mocking her as "Pocahontas".
Born and raised in Oklahoma, the 69-year-old is a graduate of the University of Houston and Rutgers Law School. "And they enlisted politicians to cut them a bigger slice". Since then, the field has grown considerably, including her Senate colleagues Kamala D. Harris (Calif.), Kirsten Gillibrand (N.Y.) and Cory Booker (N.J.). Bernie Sanders in 2016; Hillary Clinton, then a NY senator, in 2008; and then-Massachusetts Sen. Bernie Sanders and Amy Klobuchar, expected to jump in soon.
She also backed a constitutional amendment to ensure the right to vote, and she advocated for tightening ethics requirements on members of Congress and even Supreme Court justices.