Photos: Students Walk Out to Protest School Shootings, Gun Violence

Across the nation, at 10 a.m. in local time zones, students walked out of classrooms for 17 minutes to protest gun violence. Each minute represented one victim from the deadly Marjory Stoneman Douglas High School shooting in Parkland, Florida, which happened exactly one month ago, on February 14. During that shooting, a former student killed 17 former classmates and staffers.

Schools have been the sites of some of the deadliest shootings in modern U.S. history, and at the site of the shooting in Parkland, students gathered at the football field as crowds cheered for those who left campus.

In Washington, D.C., thousands gathered and headed toward the White House and Capitol. Popular cheers included "Hey, hey, NRA, how many kids did you kill today?" and were echoed during many rallies.

Here is a roundup of tributes paid nationwide:

Adam Alhanti hid in the Parkland school's band room during the shooting. He said that he would march "because I want the NRA to fear the vibrations of the people's stomps across the nation."

At 10:00, the students of America will unite as one. No matter race, gender, or ethnicity, we will all be one student body. We will walk out for 17 minutes to honor those who have passed due to our elected officials walking out on their duties for much, much longer. #walkout

— Adam Alhanti (@AAlhanti) March 14, 2018

In Newtown, Connecticut, where the Sandy Hook Elementary School shooting occurred in 2012, students assembled outside and held signs that read, "Protect Our Kids."

#ENOUGH pic.twitter.com/G6JuRKL5SW

— Jr. Newtown Action Alliance (@Junior_NAA) March 14, 2018

Student walkout at Borough Hall in downtown Brooklyn #NationalSchoolWalkout pic.twitter.com/jOOuhlIJM5

— Anthony Grande (@AnthonyGrande23) March 14, 2018

Taking a knee for all 17 victims in the tragic Marjory Stoneman Douglas High School shooting... #NationalWalkoutDay pic.twitter.com/HTWtS8dSC5

— Jason Virasami (@JasonVirasami) March 14, 2018

#StudentsStandUp Twitter Takeover: Today thousands of San Diego students are joining the #NationalSchoolWalkout to make their voices heard in the national discussion of gun violence. We will be sharing their words on our feed here. @schoolwalkoutUS @studentswalkout @womensmarch pic.twitter.com/ejsdVIsnOB

— San Diego Unified (@sdschools) March 14, 2018

proud of my school and its participation in the national school walkout today. 17 minutes of silence and 17 balloons for the lives lost at marjory stoneman douglas highschool. 💕 #NationalSchoolWalkout #NationalWalkoutDay pic.twitter.com/cVDYJLOfPb

— heather ✨ (@heatherjoyce_x) March 14, 2018

The scene from Jackson High School in Massillon, Ohio:

A speech by @noah_charlick made at the JHS peaceful protest. Truly inspiring. #walkout pic.twitter.com/7owI1CcfsA

— Cookie (@kenzie_cookie) March 14, 2018

In the aftermath of the Parkland shooting, students have confronted Capitol Hill's stalled efforts to address America's gun violence epidemic. Their reaction has started a nationwide debate, and a series of rallies have sprung up in schools from California to Florida, with frustration voiced over the lack of change.

Earlier this month, Senate Minority Leader Chuck Schumer told CNN that he had never seen anything like this. "Don't underestimate the power of these kids," he said.