Warren began her speech by talking about the city of Lawrence, citing workers in the Everett Mills as catalysts for change around the country through their walkouts and strikes.
"Families that were already going to bed hungry had to make do with even less. They were cold. They were under attack. But they stuck together – and they won," Warren said.
"And those workers did more than improve their own lives. They changed America."
The senator then pivoted to today's United States, saying that millions of American families are struggling economically. She continued to denounce what she called a "rigged system," going on to describe a need for a change in the country.
"We can’t afford to just tinker around the edges – a tax credit here, a regulation there," Warren said. "Our fight is for big, structural change."
She then announced that she was officially a candidate for president, before continuing to speak at length about her vision for the nation and the current state that she believes America is in.
Fellow Massachusetts Sen. Ed Markey was one of several government officials who spoke before Warren took the stage. He talked about Warren's time in Congress as well as her background and beliefs, saying that he and the crowd shared the same goal of seeing Warren be elected the next president.
At the end of his ringing introduction, Markey turned the stage over to Rep. Joe Kennedy III.
Kennedy, who represents Massachusetts' 4th Congressional District, spoke at length, praising Warren moments before the announcement. As he introduced the senator, Kennedy summarized his speech by talking about the leader he believes America needs.
"A colleague, a mentor and a friend. That leader is the next president of the United States. That leader is Elizabeth Warren," Kennedy said before giving the stage to Warren.
A slew of other Democrats have already announced candidacies for the 2020 presidential election. That list includes a trio of Sen. Warren's peers in Congress: New Jersey Sen. Corey Booker, California Sen. Kamala Harris, and Rep. Tulsi Gabbard of Hawaii.
Also vying for the Democratic nomination are two former politicians: John Delaney, previously a Maryland representative, and Julian Castro, the former Secretary of Housing and Urban Development under President Barack Obama.
New York businessman Andrew Yang and author Marianne Williamson of Texas have also announced they'll run in 2020, with a number of other potential candidates forming exploratory committees.
Warren rounded out her speech by hearkening back to the Lawrence mill workers, saying that they refused to be divided, before calling on her supporters to unite as well.
In her final words of the day, Warren talked about the historical context of the moment.
"This is our moment in history, the moment we are called to," Warren said. "This is our moment to dream big, fight hard and win."
Read Warren's full speech here.