Democratic presidential candidate Sen. Elizabeth Warren delivered a forceful speech in a campaign stop in New York City on Monday evening.

Warren presented a vision of systemic change driven from the inside and outside while also vowing to tackle political corruption if she were elected as the nation's next president.

Her address focused on corruption in American politics, and she also spoke about the 1911 Triangle Shirtwaist Factory fire, which killed 146 garment workers — most of them women — and spurred substantial workplace safety reforms.

The campaign estimated over 20,000 people turned out to hear the senator from Massachusetts make her case for the White House, which would make it the biggest rally of her presidential run so far.

Insider was on the scene as Warren delivered a defining speech of her candidacy. Here's what we saw.

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NEW YORK — Democratic presidential candidate Sen. Elizabeth Warren delivered a forceful speech in a campaign stop in New York City on Monday evening, presenting a vision of systemic change driven from the inside and outside while also vowing to tackle political corruption if she were elected as the nation's next president.

The campaign estimated over 20,000 people turned out to hear the senator from Massachusetts make her case for the White House, which would make it the biggest rally of her presidential run so far.

Her address focused on corruption in American politics, and she also spoke about the 1911 Triangle Shirtwaist Factory fire, which killed 146 garment workers — most of them women — and spurred substantial workplace safety reforms.

Insider was on the scene as Warren delivered a defining speech of her candidacy. Here's what we saw.