Savannah Desrosiers, 7, of Parkland, Florida, stands with her mother before the march in Washington, D.C.
Thousands of marchers converge on Pennsylvania Avenue as seen from the sixth floor of the Newseum during the "March for Our Lives" in Washington, D.C., on Saturday.
Ellie Miller of Los Angeles looks on during the "March for Our Lives" demonstration against gun violence in Washington, D.C.
Leah Lipke, 16, left, and Ashley Keene, 16, center, from Cypress Bay High School in Weston, Florida, embrace as they gather with fellow Florida students outside the U.S. Capitol for a news conference in connection with Giffords Courage to Fight Gun Violence. They were in town for the "March for Our Lives."
Lillie Perez, 11, holds a protest sign during a "March for Our Lives" demonstration in Houston.
Ayanne Johnson, a student from Great Mills High School in southern Maryland holds a sign bearing a photo of her classmate Jaelynn Willey, who was fatally shot by a classmate at the school in southern Maryland.
Protesters hold up signs outside the U.S. Embassy in London on Saturday in solidarity with the “March for Our Lives” protests in the U.S.
Steven Rothman, left, and Dan Knorowski attend the "March for Our Lives" rally in support of gun control in Washington.
Ariana Grande performs "Be Alright" during the "March for Our Lives" rally in in Washington.
Houston Police Chief Art Acevedo, center, and Houston Mayor Sylvester Turner, far right, join demonstrators during a "March for Our Lives" protest for gun legislation and school safety Saturday, March 24, 2018, in Houston. Turner has told several thousand people demonstrating for stricter gun control that adults have a responsibility to stand up and protect all children.
People take part in a march rally against gun violence Saturday, March 24, 2018, in New York. Tens of thousands of people poured into the nation's capital and cities across America on Saturday to march for gun control and ignite political activism among the young.
Sarah Chadwick, a survivor of the mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla., speaks during the "March for Our Lives" rally in support of gun control in Washington, Saturday, March 24, 2018.
Looking west from the stage area, the crowd fills Pennsylvania Avenue during the "March for Our Lives" rally in Washington.
Protesters fill Pennsylvania Avenue, as seen from the Newseum, during the "March for Our Lives" rally in support of gun control in Washington, Saturday, March 24, 2018.
Students from South Florida join Terri Robinovitz, the grandmother of Marjory Stoneman Douglas victim Alyssa Alhadeff, and Alyssa's mother, Lori. A gun control group flew in teens from around the country, including survivors of the Parkland shooting, to talk to lawmakers about gun violence.
People hold banners during the "March For Our Lives" event in Paris, France, Saturday, March 24, 2018. The march is one of hundreds happening across the U.S. and the world to urge U.S. lawmakers to pass stricter gun safety legislation after deadly school shootings.
John Collins, 19, a University of Cincinnati student, cheers outside city hall during the "March for Our Lives" protest for gun legislation and school safety, Saturday, March 24, 2018, in Cincinnati. Students and activists across the country planned events Saturday in conjunction with a Washington march spearheaded by teens from Marjory Stoneman Douglas High School in Parkland, Fla., where over a dozen people were killed in February.
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