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WASHINGTON, DC - FEBRUARY 19: Demonstrators lie on the ground a "lie-in" demonstration supporting gun control reform near the White House on February 19, 2018 in Washington, DC. According to a statement from the White House, "the President is supportive of efforts to improve the Federal background check system.", in the wake of last weeks shooting at a high school in Parkland, Florida. (Photo by Zach Gibson/Getty Images)

WASHINGTON, DC - FEBRUARY 19: Demonstrators lie on the ground a "lie-in" demonstration supporting gun control reform near the White House on February 19, 2018 in Washington, DC. According to a statement from the White House, "the President is supportive of efforts to improve the Federal background check system.", in the wake of last weeks shooting at a high school in Parkland, Florida. (Photo by Zach Gibson/Getty Images)

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Majory Stoneman High School student Cameron Kasky addresses area High Schoolstudents as they rally at Marjory Stoneman Douglas High School after participating in a county wide school walk out in Parkland, Florida on February 21, 2018. A former student, Nikolas Cruz, opened fire at Marjory Stoneman Douglas High School leaving 17 people dead and 15 injured on February 14. / AFP PHOTO / RHONA WISE (Photo credit should read RHONA WISE/AFP/Getty Images)

Majory Stoneman High School student Cameron Kasky addresses area High Schoolstudents as they rally at Marjory Stoneman Douglas High School after participating in a county wide school walk out in Parkland, Florida on February 21, 2018. 
A former student, Nikolas Cruz, opened fire at Marjory Stoneman Douglas High School leaving 17 people dead and 15 injured on February 14. / AFP PHOTO / RHONA WISE        (Photo credit should read RHONA WISE/AFP/Getty Images)

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Students of area High Schools rally at Marjory Stoneman Douglas High School after participating in a county wide school walk out in Parkland, Florida on February 21, 2018. A former student, Nikolas Cruz, opened fire at Marjory Stoneman Douglas High School leaving 17 people dead and 15 injured on February 14. / AFP PHOTO / RHONA WISE (Photo credit should read RHONA WISE/AFP/Getty Images)

Students of area High Schools rally at Marjory Stoneman Douglas High School after participating in a county wide school walk out in Parkland, Florida on February 21, 2018. 
A former student, Nikolas Cruz, opened fire at Marjory Stoneman Douglas High School leaving 17 people dead and 15 injured on February 14. / AFP PHOTO / RHONA WISE        (Photo credit should read RHONA WISE/AFP/Getty Images)

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PARKLAND, FL - FEBRUARY 14: People are brought out of the Marjory Stoneman Douglas High School after a shooting at the school that reportedly killed and injured multiple people on February 14, 2018 in Parkland, Florida. Numerous law enforcement officials continue to investigate the scene. (Photo by Joe Raedle/Getty Images)

PARKLAND, FL - FEBRUARY 14: People are brought out of the Marjory Stoneman Douglas High School after a shooting at the school that reportedly killed and injured multiple people on February 14, 2018 in Parkland, Florida. Numerous law enforcement officials continue to investigate the scene. (Photo by Joe Raedle/Getty Images)

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Students of area High Schools rally at Marjory Stoneman Douglas High School after participating in a county wide school walk out in Parkland, Florida on February 21, 2018. A former student, Nikolas Cruz, opened fire at Marjory Stoneman Douglas High School leaving 17 people dead and 15 injured on February 14. / AFP PHOTO / RHONA WISE (Photo credit should read RHONA WISE/AFP/Getty Images)

Students of area High Schools rally at Marjory Stoneman Douglas High School after participating in a county wide school walk out in Parkland, Florida on February 21, 2018.
A former student, Nikolas Cruz, opened fire at Marjory Stoneman Douglas High School leaving 17 people dead and 15 injured on February 14. / AFP PHOTO / RHONA WISE        (Photo credit should read RHONA WISE/AFP/Getty Images)