PARKLAND, FL - FEBRUARY 18: Students and family members holds hands around a makeshift memorial in front of Marjory Stoneman Douglas High School where 17 people were killed on February 14, on February 18, 2018 in Parkland, Florida. Police arrested 19-year-old former student Nikolas Cruz for killing 17 people at the high school. (Photo by Mark Wilson/Getty Images)
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Students participate in a protest against gun violence. Los Angeles, California on March 14, 2018. Students across the US walked out of classes to protest gun violence in the wake of the massacre of 17 people at Florida's Marjory Stoneman Douglas High School. (Photo by Ronen Tivony/NurPhoto via Getty Images)
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Students participate in a protest against gun violence. Los Angeles, California on March 14, 2018. Students across the US walked out of classes to protest gun violence in the wake of the massacre of 17 people at Florida's Marjory Stoneman Douglas High School. (Photo by Ronen Tivony/NurPhoto via Getty Images)
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