Leonardo DiCaprio reacts to Trump's 'insulting' tweet to Greta Thunberg at 2019 Global Citizen Festival

Leonardo DiCaprio shocked the 60,000 people who united in Manhattan's Central Park on Saturday for the 2019 Global Citizen's Festival, which honored the significant efforts to end extreme poverty by 2030.

The Oscar-winning actor took the stage to discuss the current climate movement and expressed gratitude for youth climate activists. He brought out three young leaders, Alexandria Villaseñor, Xiye Bastida, and Selina Neirok Leem, who he says " are powering the movement from the frontlines."

During DiCaprio's speech, he got candid about Donald Trump's headline-making tweet, where the president seemingly mocked 16-year-old Greta Thunberg hours after she delivered a passionate speech to the United Nations Climate Action Summit. 

“As these young people have been standing up for their right to survive, surprisingly some have reacted to this movement with insulting tweets and negative talking points, individuals that seem to care more about their own self-interests than about your future, but we know that the climate youth movement is more important than at any time in human history," the 44-year-old actor said.

“Are we going to react to the climate movement with insulting tweets?” he asked.

"The facts are clear and unless you live in an alternate reality, there is no more time for denial."

"Last Friday, young people led the world in strike...Millions of brave individuals did more than simply walk out of their school and places of employment."

"They took a stand,” he added. “They set an example of true leadership that our planet so desperately needs. These young people have said clearly, definitively, and without fear, that the time for inaction is over.”

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2019 Global Citizen Festival
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2019 Global Citizen Festival
US singers Carole King (L) and Kelly Clarkson perform onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actor Leonardo DiCaprio speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
NEW YORK, NEW YORK - SEPTEMBER 28: Alicia Keys performs onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
Adam Lambert and Brian May of Queen perform onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actress Katie Holmes (L) and Proctor & Gamble President Feminine Care Jennifer Davis speak onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
NEW YORK, NEW YORK - SEPTEMBER 28: Amina Mohammed (L) and Chris Martin speak onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Theo Wargo/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Roger Taylor, Rami Malek, and Brian May attend the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Alicia Keys performs onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
US actor Leonardo DiCaprio smiles as he speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer Pharrell performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US-Israeli actress Natalie Portman speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actor Rami Malek speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
Adam Lambert and Brian May of Queen perform onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actress Laverne Cox speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actor Kal Penn (L) and US television presenter Bill Nye speak onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer Pharrell performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
Australian actress Deborra-Lee Furness (L) and husband Australian actor Hugh Jackman look on onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US rapper French Montana performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
Mayor of New York City Bill de Blasio speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actress Rachel Brosnahan speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actress Anna Kendrick speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actor and singer Ben Platt performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
CEO of Verizon Communications Hans Vestberg speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer Ryan Tedder of OneRepublic performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer Ryan Tedder of OneRepublic performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer Carole King performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US-Somali model and actress Iman speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer and television presenter Kelly Clarkson speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actress Taraji P. Henson speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US actress Dakota Johnson speaks onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer-songwriter H.E.R. performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
US singer-songwriter H.E.R. performs onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
South Korean boy band NCT 127 perform onstage at the 2019 Global Citizen Festival: Power The Movement in Central Park in New York on September 28, 2019. (Photo by Angela Weiss / AFP) (Photo credit should read ANGELA WEISS/AFP/Getty Images)
NEW YORK, NEW YORK - SEPTEMBER 28: Laverne Cox (2nd R) speaks onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Theo Wargo/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Governor of Lagos State Babajide Sanwo-Olu and UN General Assemby 74th President Tijjani Muhammad-Bande speak onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Theo Wargo/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Global Citizen CEO Hugh Evans and Rami Malek attend the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Noam Galai/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Adam Lambert and Brian May of Queen perform onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Savannah Sellers attends the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Parkwood Entertainment, BeyGOOD Director, Ivy McGregor (C) speaks onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Theo Wargo/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Adam Lambert, Brian May, and Roger Taylor perform onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Brian May of Queen performs onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Joy Reid speaks onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Theo Wargo/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Pharrell Williams performs onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Noam Galai/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Cisco EVP and CPO Fran Katsoudas and Founder & Executive Director Youth Leadership & Food for Education Wawira Njiru speak onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Theo Wargo/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Leonardo DiCaprio speaks onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: (L-R) Jaehyun, Taeyong, and Mark of NCT 127 perform onstage during the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Kevin Mazur/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Becky G attends the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Noam Galai/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Daniela Pierre Bravo attends the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Noam Galai/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Natalie Portman attends the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Noam Galai/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Angelique Kidjo attends the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Noam Galai/Getty Images for Global Citizen)
NEW YORK, NEW YORK - SEPTEMBER 28: Hugh Jackman and Deborra-lee Furness attend the 2019 Global Citizen Festival: Power The Movement in Central Park on September 28, 2019 in New York City. (Photo by Noam Galai/Getty Images for Global Citizen)
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