Many senior Warren staffers stayed behind in the drafty historic church and got in Warren's "selfie" line to take a picture with their boss and celebrate the one-year anniversary of the campaign. Campaign manager Roger Lau and Warren shared a warm embrace near the end of the line.

Warren officials often refer back to her launch video from a year ago as something of a thesis statement — evidence of the consistency of her reason for running.

“Our government is supposed to work for all of us, but instead, it has become a tool for the wealthy and well-connected,” she said in the video, a sentiment she frequently echoes on the trail.

Warren’s moves come as she has been squeezed by a resurgent Bernie Sanders on her left and an insurgent Pete Buttigieg on her right. Her attempts to straddle the ideological divides in the party — and potentially unify its factions — have left her open to attacks from both sides. Even Sanders has taken subtle shots at her commitment to Medicare for All, digs which have been amplified by many of his allies.

Buttigieg and Joe Biden, meanwhile, hit Warren for weeks for her “fighting” or “angry” approach to politics, along with her support for Medicare for All.

After weeks of trying to blunt the attacks, Warren has begun drawing more explicit contrasts with Biden and especially Buttigieg. She has focused most on their fundraising practices.

“Billionaires in wine caves should not pick the next president of the United States,” Warren posted on Instagram after the last primary debate, in reference to a recent Buttigieg fundraiser.

Buttigieg has pushed back by highlighting Warren's past fundraising during her Senate runs. "Senator, your presidential campaign right now as we speak is funded in part by money you transferred, having raised it at those exact same big-ticket fundraisers you now denounce," Buttigieg said at the debate. "Did it corrupt you, senator? Of course not."

Warren implicitly rebuked Buttigieg in Tuesday's speech. "The billionaires, the corporate executives and their favorite presidential candidates have one clear goal: To convince you that everything you imagine is impossible. To convince you that reform is hopeless. To convince you that because no one can be pure, it’s pointless to try to make anything better," she said.