Students protest gun violence nationwide on Columbine anniversary

Thousands of students walked out of classes across the United States on Friday, marking the 19th anniversary of the massacre at Columbine High School with a show of unity aimed at pressuring politicians to enact tighter gun restrictions.

Students from more than 2,600 schools and institutions were expected to leave their classes at 10:00 a.m. local time, organizers said. Many wore orange, a color that has come to represent the movement against gun violence, as they observed a 13-second silence in honor of those killed at Columbine.

On April 20, 1999, two Columbine seniors rampaged through their school, killing 12 of their classmates and a teacher before committing suicide. Since then, mass shootings have occurred with shocking frequency across the United States.

The second deadliest public school shooting in U.S. history took place in Parkland, Florida, on Feb. 14, leaving 17 dead. The shooting set off a national student movement calling for an end to gun violence and tighter gun restrictions. (Reuters)

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<p>Demonstrator sit next to a sign that reads “Our Blood Is On Their Hands” during a school walkout protesting the National Rifle Association (NRA) in Washington, D.C., on Friday, April 20, 2018. Students around the U.S. left school to take a moment of silence to honor the victims of the Columbine High School shooting, on its 19th Anniversary. (Photo: Al Drago/Bloomberg via Getty Images) </p>
Washington, D.C.

Demonstrator sit next to a sign that reads “Our Blood Is On Their Hands” during a school walkout protesting the National Rifle Association (NRA) in Washington, D.C., on Friday, April 20, 2018. Students around the U.S. left school to take a moment of silence to honor the victims of the Columbine High School shooting, on its 19th Anniversary. (Photo: Al Drago/Bloomberg via Getty Images)

<p>A student holds up her hands while taking part in National School Walkout Day to protest school violence on April 20, 2018 in Chicago, Illinois. (Photo: Jim Young/Getty Images) </p>
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A student holds up her hands while taking part in National School Walkout Day to protest school violence on April 20, 2018 in Chicago, Illinois. (Photo: Jim Young/Getty Images)

<p>Students from St. Petersburg High School gather along 5th Avenue N in front of the school to protest gun violence, Friday, April 20, 2018. in St. Petersburg, Fla., before they marched to City Hall. (Photo: Scott Keeler/Tampa Bay Times via AP) </p>
St. Petersburg, Fla.

Students from St. Petersburg High School gather along 5th Avenue N in front of the school to protest gun violence, Friday, April 20, 2018. in St. Petersburg, Fla., before they marched to City Hall. (Photo: Scott Keeler/Tampa Bay Times via AP)

<p>Maura Palden from Bard College at Simon’s Rock protests along Main Street in Great Barrington, Mass., Friday April 20, 2018, as they take part in a national school walkout event to protest gun violence. Protests were held across the country Friday, on the 19th anniversary of the Columbine High School shooting. (Photo: Ben Garver/The Berkshire Eagle via AP) </p>
Great Barrington, Mass.

Maura Palden from Bard College at Simon’s Rock protests along Main Street in Great Barrington, Mass., Friday April 20, 2018, as they take part in a national school walkout event to protest gun violence. Protests were held across the country Friday, on the 19th anniversary of the Columbine High School shooting. (Photo: Ben Garver/The Berkshire Eagle via AP)

<p>Delany Tarr, a senior, signs a poster as she gathers together with some of her fellow students from Marjory Stoneman Douglas High School, where 17 classmates and teachers were killed during a mass shooting, after walking out of school during the National School Walkout on April 20, 2018 in Parkland, Fla. (Photo: Joe Raedle/Getty Images) </p>
Parkland, Fla.

Delany Tarr, a senior, signs a poster as she gathers together with some of her fellow students from Marjory Stoneman Douglas High School, where 17 classmates and teachers were killed during a mass shooting, after walking out of school during the National School Walkout on April 20, 2018 in Parkland, Fla. (Photo: Joe Raedle/Getty Images)

<p>Grand Blanc High School juniors Anneliese Hull, center left, and Tasha Kue stand tall while holding protest signs in a moment of silence, Friday, April 20, 2018, in Grand Blanc, Mich., as they took part in a national school walkout event to protest gun violence. (Photo: Jake May/The Flint Journal-MLive.com via AP) </p>
Grand Blanc, Mich.

Grand Blanc High School juniors Anneliese Hull, center left, and Tasha Kue stand tall while holding protest signs in a moment of silence, Friday, April 20, 2018, in Grand Blanc, Mich., as they took part in a national school walkout event to protest gun violence. (Photo: Jake May/The Flint Journal-MLive.com via AP)

<p>Students gather at the Iowa State Capitol in Des Moines, Iowa, Friday, April 20, 2018, as they taking part in a national school walkout event to protest gun violence. (Photo: Barbara Rodriguez/AP) </p>
Des Moines, Iowa,

Students gather at the Iowa State Capitol in Des Moines, Iowa, Friday, April 20, 2018, as they taking part in a national school walkout event to protest gun violence. (Photo: Barbara Rodriguez/AP)

<p>Students and teachers from grades 6 to 8 leave the Berkshire Country Day School campus in Stockbridge and walk to downtown Lenox, chanting and holding signs against gun violence, Friday, April 20, 2018, as they taking part in a national school walkout event to protest gun violence. (Photo: Stephanie Zollshan/The Berkshire Eagle via AP) </p>
Stockbridge, Mass.

Students and teachers from grades 6 to 8 leave the Berkshire Country Day School campus in Stockbridge and walk to downtown Lenox, chanting and holding signs against gun violence, Friday, April 20, 2018, as they taking part in a national school walkout event to protest gun violence. (Photo: Stephanie Zollshan/The Berkshire Eagle via AP)

<p>Demonstrators hold signs and shout slogans while marching from the White House to the U.S. Capitol during a school walkout protesting the National Rifle Association (NRA) in Washington, D.C., on Friday, April 20, 2018. (Photo: Al Drago/Bloomberg via Getty Images </p>
Washington, D.C.

Demonstrators hold signs and shout slogans while marching from the White House to the U.S. Capitol during a school walkout protesting the National Rifle Association (NRA) in Washington, D.C., on Friday, April 20, 2018. (Photo: Al Drago/Bloomberg via Getty Images

<p>A student holds up a sign in the City Hall courtyard during a school walkout to protest gun violence on Friday, April 20, 2018. Thousands of protests were planned across the country Friday on the 19th anniversary of the Columbine High School shooting. (Photo: Sydney Schaefer/The Philadelphia Inquirer via AP) </p>
Philadelphia, Pa.

A student holds up a sign in the City Hall courtyard during a school walkout to protest gun violence on Friday, April 20, 2018. Thousands of protests were planned across the country Friday on the 19th anniversary of the Columbine High School shooting. (Photo: Sydney Schaefer/The Philadelphia Inquirer via AP)

<p>Students observe 19 minutes of silence outside the White House, as part of a nationwide walk-out of classes to mark the 19th anniversary of the Columbine High School mass shooting, in Washington, D.C., April 20, 2018. (Photo: Brian Snyder/Reuters) </p>
Washington, D.C.

Students observe 19 minutes of silence outside the White House, as part of a nationwide walk-out of classes to mark the 19th anniversary of the Columbine High School mass shooting, in Washington, D.C., April 20, 2018. (Photo: Brian Snyder/Reuters)

<p>Following the February shooting at a high school in Parkland, Fla., several hundred students march to a rally on the West Lawn of the Capitol to call for an end to gun violence in schools, in Washington, Friday, April 20, 2018, the 19th anniversary of the mass shooting in Littleton, Colo. (Photo: J. Scott Applewhite/AP) </p>
Washington. D.C.

Following the February shooting at a high school in Parkland, Fla., several hundred students march to a rally on the West Lawn of the Capitol to call for an end to gun violence in schools, in Washington, Friday, April 20, 2018, the 19th anniversary of the mass shooting in Littleton, Colo. (Photo: J. Scott Applewhite/AP)

<p>Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters) </p>
New York City

Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters)

<p>Palo Verde High School students (L-R) Mallory McKissick, Raven Green, Eli Duncan, Nicole Sandberg, Ainslee Archibald and Sonia Agrebi pose outside the school while fellow student Jake Grosvenor takes photos as they participate in the National School Walkout on the 19th anniversary of the 1999 mass shooting that killed 13 people at Columbine High School on April 20, 2018 in Las Vegas, Nev. (Photo: Ethan Miller/Getty Images) </p>
Las Vegas, Nev.

Palo Verde High School students (L-R) Mallory McKissick, Raven Green, Eli Duncan, Nicole Sandberg, Ainslee Archibald and Sonia Agrebi pose outside the school while fellow student Jake Grosvenor takes photos as they participate in the National School Walkout on the 19th anniversary of the 1999 mass shooting that killed 13 people at Columbine High School on April 20, 2018 in Las Vegas, Nev. (Photo: Ethan Miller/Getty Images)

<p>Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters) </p>
New York City

Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters)

<p>Several hundred high school students from the Washington area rally in front of the White House before marching to the U.S. Capitol to protest against the National Rifle Association and to call for stricter gun laws April 20, 2018 in Washington, D.C. (Photo: Chip Somodevilla/Getty Images) </p>
Washington, D.C.

Several hundred high school students from the Washington area rally in front of the White House before marching to the U.S. Capitol to protest against the National Rifle Association and to call for stricter gun laws April 20, 2018 in Washington, D.C. (Photo: Chip Somodevilla/Getty Images)

<p>Students at Clarke Central High School walk out in protest of nationwide school shootings in Athens, Ga., Friday, April 20, 2018. (Photo: Joshua L. Jones/Athens Banner-Herald via AP) </p>
Athens, Ga.

Students at Clarke Central High School walk out in protest of nationwide school shootings in Athens, Ga., Friday, April 20, 2018. (Photo: Joshua L. Jones/Athens Banner-Herald via AP)

<p>A man shows his support for several hundred high school students from the Washington area as they rallying in front of the White House to protest against the National Rifle Association and to call for stricter gun laws April 20, 2018 in Washington, D.C. (Photo: Chip Somodevilla/Getty Images) </p>
Washington, D.C.

A man shows his support for several hundred high school students from the Washington area as they rallying in front of the White House to protest against the National Rifle Association and to call for stricter gun laws April 20, 2018 in Washington, D.C. (Photo: Chip Somodevilla/Getty Images)

<p>Several hundred high school students from the Washington area and their supporters observe 19 minutes of silence while rallying in front of the White House to protest against the National Rifle Association and to call for stricter gun laws April 20, 2018 in Washington, D.C. (Photo: Chip Somodevilla/Getty Images) </p>
Washington, D.C.

Several hundred high school students from the Washington area and their supporters observe 19 minutes of silence while rallying in front of the White House to protest against the National Rifle Association and to call for stricter gun laws April 20, 2018 in Washington, D.C. (Photo: Chip Somodevilla/Getty Images)

<p>High school students call for anti-gun laws as they protest and rally in Washington Square Park, Friday April 20, 2018, in New York. Protests were planned across the country Friday, on the 19th anniversary of the Columbine High School shooting. (Photo: Bebeto Matthews/AP) </p>
New York City

High school students call for anti-gun laws as they protest and rally in Washington Square Park, Friday April 20, 2018, in New York. Protests were planned across the country Friday, on the 19th anniversary of the Columbine High School shooting. (Photo: Bebeto Matthews/AP)

<p>Student activists participate in a ‘die-in’ to protest gun violence at Washington Square Park, near the campus of New York University, April 20, 2018 in New York City. (Photo: Drew Angerer/Getty Images) </p>
New York City

Student activists participate in a ‘die-in’ to protest gun violence at Washington Square Park, near the campus of New York University, April 20, 2018 in New York City. (Photo: Drew Angerer/Getty Images)

<p>Students march to the U.S. Capitol, as part of a nationwide walk-out of classes to mark the 19th anniversary of the Columbine High School mass shooting, in Washington, D.C., April 20, 2018. (Photo: Brian Snyder/Reuters) </p>
Washington, D.C.

Students march to the U.S. Capitol, as part of a nationwide walk-out of classes to mark the 19th anniversary of the Columbine High School mass shooting, in Washington, D.C., April 20, 2018. (Photo: Brian Snyder/Reuters)

<p>Student activists rally against gun violence at Washington Square Park, near the campus of New York University, April 20, 2018 in New York City. (Photo: rew Angerer/Getty Images) </p>
New York City

Student activists rally against gun violence at Washington Square Park, near the campus of New York University, April 20, 2018 in New York City. (Photo: rew Angerer/Getty Images)

<p>A student attends a rally outside the White House as part of nationwide walk-outs of classes to mark the 19th anniversary since the Columbine High School mass shooting, at Lafayette Park in Washington, D.C., April 20, 2018. (Photo: Carlos Barria/Reuters) </p>
Washington, D.C.

A student attends a rally outside the White House as part of nationwide walk-outs of classes to mark the 19th anniversary since the Columbine High School mass shooting, at Lafayette Park in Washington, D.C., April 20, 2018. (Photo: Carlos Barria/Reuters)

<p>Students attend a rally outside the White House as part of nationwide walk-outs of classes to mark the 19th anniversary since the Columbine High School mass shooting, at Lafayette park in Washington, D.C., April 20, 2018. (Photo: Carlos Barria/Reuters) </p>
Washington, D.C.

Students attend a rally outside the White House as part of nationwide walk-outs of classes to mark the 19th anniversary since the Columbine High School mass shooting, at Lafayette park in Washington, D.C., April 20, 2018. (Photo: Carlos Barria/Reuters)

<p>Students from Washington-Lee High School join the National School Walkout while making their way to the U.S. Capitol April 20, 2018 in Arlington, Virginia. (Photo: Win McNamee/Getty Images) </p>
Arlington, Va.

Students from Washington-Lee High School join the National School Walkout while making their way to the U.S. Capitol April 20, 2018 in Arlington, Virginia. (Photo: Win McNamee/Getty Images)

<p>Students from Fiorello H. Laguardia High School march out of their school in support of a National School Walkout in Manhattan, New York City, April 20, 2018. (Photo: Mike Segar/Reuters) </p>
New York City

Students from Fiorello H. Laguardia High School march out of their school in support of a National School Walkout in Manhattan, New York City, April 20, 2018. (Photo: Mike Segar/Reuters)

<p>Students march to the Capitol on Pennsylvania Avenue to call on Congress to act on gun violence prevention during a national walkout on April 20, 2018, which marks the 19th anniversary of the Columbine High School shooting in Colorado. (Photo: Tom Williams/CQ Roll Call/Getty Images) </p>
Washington, D.C.

Students march to the Capitol on Pennsylvania Avenue to call on Congress to act on gun violence prevention during a national walkout on April 20, 2018, which marks the 19th anniversary of the Columbine High School shooting in Colorado. (Photo: Tom Williams/CQ Roll Call/Getty Images)

<p>Harvard University student Cecilia Nunez wears a Black Lives Matter earring during a rally against school shootings and gun violence on the steps of Widener Library on campus in Cambridge, Mass., Friday, April 20, 2018. Protests were planned across the country Friday, on the 19th anniversary of the Columbine High School shooting. (Photo: Michael Dwyer/AP) </p>
Cambridge, Mass.

Harvard University student Cecilia Nunez wears a Black Lives Matter earring during a rally against school shootings and gun violence on the steps of Widener Library on campus in Cambridge, Mass., Friday, April 20, 2018. Protests were planned across the country Friday, on the 19th anniversary of the Columbine High School shooting. (Photo: Michael Dwyer/AP)

<p>Harvard University students observe a moment of silence during a protest against school shootings and gun violence on the steps of Widener Library on campus in Cambridge, Mass., Friday, April 20, 2018. (Photo: Michael Dwyer/AP) </p>
Cambridge, Mass.

Harvard University students observe a moment of silence during a protest against school shootings and gun violence on the steps of Widener Library on campus in Cambridge, Mass., Friday, April 20, 2018. (Photo: Michael Dwyer/AP)

<p>Students, from left, Nariah Marzka, 14; Morgan Orelski, 15, and Travis Burge, 15, who joined about 500 students, leave leave Keck Field after taking part in a national school walkout event to protest gun violence and honor shooting victims at Fairview High School in Fairview Township, Erie County, Pa., Friday April 20, 2018. (Photo: Christopher Millette/Erie Times-News via AP) </p>
Erie County, Pa.

Students, from left, Nariah Marzka, 14; Morgan Orelski, 15, and Travis Burge, 15, who joined about 500 students, leave leave Keck Field after taking part in a national school walkout event to protest gun violence and honor shooting victims at Fairview High School in Fairview Township, Erie County, Pa., Friday April 20, 2018. (Photo: Christopher Millette/Erie Times-News via AP)

<p>Fairview Middle and High School students taking part in a national school walkout event to protest gun violence and honor shooting victims at Fairview High School in Fairview Township, Erie County, Pa., Friday April 20, 2018. (Photo: Christopher Millette/Erie Times-News via AP) </p>
Erie County, Pa.

Fairview Middle and High School students taking part in a national school walkout event to protest gun violence and honor shooting victims at Fairview High School in Fairview Township, Erie County, Pa., Friday April 20, 2018. (Photo: Christopher Millette/Erie Times-News via AP)

<p>Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters) </p>
New York City

Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters)

<p>Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Mike Segar/Reuters) </p>
New York City

Youths take part in a National School Walkout anti-gun march in Washington Square Park in Manhattan, New York City, April 20, 2018. (Photo: Mike Segar/Reuters)

<p>Two rings of chairs encircle the words “NEVER AGAIN” in a silent protest on the 19th anniversary of the Columbine High School shooting outside Trinity High School in Manchester, N.H., Friday, April 20, 2018. The inner ring chairs have names of the Columbine victims, the outer ring chairs have names of the Parkland High School shooting victims. (Photo: Charles Krupa/AP) </p>
Manchester, N.H.

Two rings of chairs encircle the words “NEVER AGAIN” in a silent protest on the 19th anniversary of the Columbine High School shooting outside Trinity High School in Manchester, N.H., Friday, April 20, 2018. The inner ring chairs have names of the Columbine victims, the outer ring chairs have names of the Parkland High School shooting victims. (Photo: Charles Krupa/AP)

<p>Youths take part in a National School Walkout anti-gun march in New York City, New York, (Photo: Brendan McDermid/Reuters) </p>
New York City

Youths take part in a National School Walkout anti-gun march in New York City, New York, (Photo: Brendan McDermid/Reuters)

<p>Youths take part in a National School Walkout anti-gun march in New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters) </p>
New York City

Youths take part in a National School Walkout anti-gun march in New York City, April 20, 2018. (Photo: Brendan McDermid/Reuters)

<p>Students from Fiorello H. Laguardia High School march out of their school in support of a National School Walkout in Manhattan, New York City, April 20, 2018. (Photo: Mike Segar/Reuters) </p>
New York City

Students from Fiorello H. Laguardia High School march out of their school in support of a National School Walkout in Manhattan, New York City, April 20, 2018. (Photo: Mike Segar/Reuters)

<p>Marjory Stoneman Douglas student David Hogg walks to school with a large rolled banner over his shoulder on Friday, April 20, 2018 in Parkland, Fla. (Photo: Amy Beth Bennett/South Florida Sun-Sentinel via AP) </p>
Parkland, Fla.

Marjory Stoneman Douglas student David Hogg walks to school with a large rolled banner over his shoulder on Friday, April 20, 2018 in Parkland, Fla. (Photo: Amy Beth Bennett/South Florida Sun-Sentinel via AP)

<p>Marjory Stoneman Douglas teachers demonstrate in front of the school on Friday, April 20, 2018 in Parkland, Fla. (Photo: Amy Beth Bennett/South Florida Sun-Sentinel via AP) </p>
Parkland, Fla.

Marjory Stoneman Douglas teachers demonstrate in front of the school on Friday, April 20, 2018 in Parkland, Fla. (Photo: Amy Beth Bennett/South Florida Sun-Sentinel via AP)

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