Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonSanders supporters cry foul over Working Families endorsement of Warren The Hill's 12:30 Report: Trump heads to California Hillary Clinton: Voter suppression has led to 'crisis in democracy' in the US MORE is going directly after Donald TrumpDonald John TrumpBusiness, ballots and battling opioids: Why the Universal Postal Union benefits the US Sanders supporters cry foul over Working Families endorsement of Warren California poll: Biden, Sanders lead Democratic field; Harris takes fifth MORE, her Republican counterpart, in New York ahead of the state's primary.

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The new campaign ad opens with Clinton speaking about the diversity of the city, contrasting it with Trump's rhetoric on illegal immigration and Muslims.

"New York, 20 million people strong. No, we don't all look the same. We don't all sound the same, either," Clinton says over images of students, a shopkeeper and others.

"But when we pull together, we do the biggest things in the world," Clinton adds over images of firefighters and the One World Trade Center being erected.

As she speaks, a sign flashes across the screen showing "Trump: 2016," similar to ones outside Trump's hotel project in Washington, D.C. Other images include a woman wearing an American flag head covering and footage of a man punching an African-American protester in the face at a Trump rally in March.

"So when some say we can solve America's problems by building walls, banning people based on their religion and turning against each other, well, this is New York, and we know better," Clinton says.

Clinton, who is still battling Sen. Bernie SandersBernie SandersSanders supporters cry foul over Working Families endorsement of Warren California poll: Biden, Sanders lead Democratic field; Harris takes fifth Kamala Harris calls for new investigation into Kavanaugh allegations MORE (I-Vt.) for the Democratic nomination, is taking aim at the businessman and fellow New Yorker three weeks out from the April 19 primary as Trump looks to fend off GOP rival Sen. Ted CruzRafael (Ted) Edward CruzProspects for Trump gun deal grow dimmer Ted Cruz knocks New York Times for 'stunning' correction on Kavanaugh report 2020 Democrats call for Kavanaugh to be impeached MORE (Texas).