Senator Elizabeth Warren of Massachusetts formally announced her 2020 presidential bid Saturday, calling for “fundamental change” on behalf of working people and arguing that President Trump is “just the latest and most extreme symptom of what’s gone wrong in America.”
Speaking on a clear, chilly day against a backdrop of old red brick mill buildings at the site of one of the nation’s most famous labor strikes, she said workers now, like workers then, had had enough. She said that replacing Mr. Trump, whose administration she called “the most corrupt in living memory,” was only the first step in fighting back against a system tilted in favor of the wealthy.
“It won’t be enough to just undo the terrible acts of this administration,” Ms. Warren said. “We can’t afford to just tinker around the edges — a tax credit here, a regulation there. Our fight is for big, structural change.”
The selection of Lawrence was symbolic: In 1912, a historic labor strike was started by a group of women at Everett Mill, where Ms. Warren made her announcement. The senator drew on the strike as a story of women, many of them immigrants, taking on a stacked system and triumphing by gaining raises, overtime and other benefits.
Ms. Warren described the American economy as similarly tilted against the middle class, with wealth and political power concentrated at the top.
“Today, millions and millions and millions of American families are also struggling to survive in a system that’s been rigged, rigged by the wealthy and the well-connected,” Ms. Warren said. She added: “Like the women of Lawrence, we are here to say enough is enough!”
Ms. Warren, 69, who took the stage to the Dolly Parton song “9-to-5,” described her own journey, growing up as the daughter of a janitor and going on to become a law professor and a senator. As a scholar of bankruptcy law, she explained, she had studied how the opportunities she was afforded had narrowed in recent decades, as the rich became richer and the middle class was squeezed.
She said that the current rising generation of young people could be the first in which a majority were worse off economically than their parents, while the rich “seem to break the rules and pay no price.” In response, the crowd began to shout, “Enough is enough!”
When they quieted, Ms. Warren said, “When I talk about this, some rich guys scream, ‘Class warfare!’ Well, let me tell you something: These same rich guys have been waging class warfare against hard-working people for decades. I say it’s time to fight back!”
Ms. Warren touted proposals aimed at diminishing the financial industry’s power in Washington and cited her proposed wealth tax, which she called an “ultra-millionaire tax.”
“When government works only for the wealthy and the well-connected, that is corruption plain and simple,” she said, adding, “Our fight is to change the rules so that our government, our economy and our democracy work for everyone.”
Ms. Warren also received important endorsements Saturday from Senator Edward J. Markey of Massachusetts; Representative Joseph P. Kennedy III of Massachusetts, her former law student; and from the Progressive Change Campaign Committee.
In practical terms, Ms. Warren entered the presidential race over a month ago and has campaigned in Iowa, New Hampshire, South Carolina and Puerto Rico since then. But as the Democratic field becomes increasingly crowded, the event in Lawrence was seen as a way to draw a fresh burst of attention to her candidacy.
Her announcement comes as she seeks to establish herself in the race as a champion of liberal policy but also as she continues to face questions about her claims to Native American ancestry and her sometimes awkward attempts to settle the issue.
Although there is no evidence that claiming Native American identity helped her professionally, the matter has dogged her throughout her political career. Mr. Trump has long branded her with the slur “Pocahontas,” suggesting that she made up a minority identity.
Brad Parscale, the campaign manager of Mr. Trump’s re-election effort, hit Ms. Warren on the Native American issue Saturday and said, “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.”
Ms. Warren also stepped afoul of some Democrats last year when she took a DNA test to prove Native ancestry, which angered some social justice activists and Native American leaders who felt that she gave undue credence to the controversial claim that race could be determined by blood and conflated heritage with tribal citizenship.
Ms. Warren apologized to the Cherokee Nation last week, after months of resisting her own advisers and staff, some of whom had called for her to show contrition earlier. Democratic voters at Ms. Warren’s early campaign stops have repeatedly said the issue was not important to them, but it continues to be discussed.
This week, new questions were raised when The Washington Post reported that in 1986 Ms. Warren filled out a registration card for the State Bar of Texas on which she listed her race as “American Indian.”
Several people at the rally in Lawrence said that the issue did not bother them personally but expressed concern that it could be an ongoing weakness for her, especially in a general election.
“I think it will be more of a sexism problem that she’ll have to deal with, especially if she wins the primary,” said Jennifer Robertson, 21, a senior majoring in political science at Merrimack College in nearby North Andover. “I think they’ll hold her more accountable for her mistakes in the past.”
But some other comments suggested how successful Mr. Trump has been at painting Ms. Warren as fundamentally dishonest about her background.
John Boyle, 18, a high school senior from Andover, who was wearing a “Love Trumps Hate” button and said he was a registered independent, said the issue was a problem for him.
“She lied about her ethnicity, and that’s not O.K.,” he said. “I think if she lies about something so fundamental as her ethnicity, what’s to stop her from lying about something bigger when she’s going to be president? To me, that really rubs me the wrong way.”
Later in the day, Ms. Warren held an event in Dover, N.H., where voters asked her about topics including veterans affairs and Middle East politics.
One woman said she was appalled by how much money was spent in the last presidential election and asked how Ms. Warren would change the election system.
In response, Ms. Warren said she was pledging not to accept any money from political action committees or lobbyists and was not “hanging out with a bunch of billionaires hoping that they will fund a super PAC for me in a primary.”
“We’ve got to walk to the walk,” she said. “If we actually believe that money has too damn much influence in Washington, then change starts right here in the Democratic presidential primary.”