National School Walkout to End Gun Violence

"Our blood is on their hands" reads the sign held by Jacob Mintz (16), a 10th grader at Frost High School. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Our blood is on their hands" reads the sign held by Jacob Mintz (16), a 10th grader at Frost High School. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Our Blood - Your Hands" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Our Blood - Your Hands" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"I should be worrying about my grades - Not my survival" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"What happened to being Pro Life?" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"What happened to being Pro Life?" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Books Not Bullets" Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Books Not Bullets" Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Books Not Bullets" Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"On an average day, 7 children die from gun violence - Time for change" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"On an average day, 7 children die from gun violence - Time for change" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"On an average day, 7 children die from gun violence - Time for change" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Dissent is Patriotic" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Arms are for hugging - The NRA is bugging" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Am I Next?" laments 9th grader Raemi. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Am I Next?" laments 9th grader Raemi. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Arms are for hugging" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Arms are for hugging" reads the sign. Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

Students gather near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. At 10 a.m., they sat for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

Students sit for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. "18th Century laws can't regulate 21st Century guns" reads the sign. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

Students sit for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. "18th Century laws can't regulate 21st Century guns" reads the sign. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

"Never again." Students sit for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

Students sit for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. "18th Century laws can't regulate 21st Century guns" reads the sign. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

Students sit for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)

National School Walkout to End Gun Violence

Students sit for 19 minutes of silence, in remembrance of the Columbine massacre's 13 victims. Students gathered near the White House in Washington D.C. to protest gun violence. At schools across the country, students walked out of class on Friday, April 20, 2018, the 19th anniversary of the shooting at Columbine High School in Littleton, Colo. It was also a little more than two months since the Feb. 14 shooting at Marjory Stoneman Douglas High School in Parkland, Fla. (Photo by Jeff Malet)