Students across the United States demanded action on gun violence and school safety in walkouts Wednesday, March 14, 2018, one month after the mass shooting at Marjory Stoneman Douglas High School in Parkland, Fla. The demonstrations for the National School Walkout also memorialized those killed in the Parkland shooting, with students leaving class for at least 17 minutes — one minute for each of the dead.
Tynesha Tatum, left, mother of Courtlin Arrington, a student who was fatally shot at Huffman High School in Birmingham, Ala., on March 7, 2018, attends the Huffman High school walkout in Birmingham, Ala. Students walked out of school to protest gun violence in response to last month's massacre of 17 people at Florida's Marjory Stoneman Douglas High School.
Tucson High School students sit on the front steps of the Arizona school before a walkout to commemorate victims of the Parkland, Fla., shooting and to advocate for gun safety.
Redondo Union High School students walk out of class and assemble outside their school for the National School Walkout in Redondo Beach, Calif..
Kaylee Tyner, 16, listens during a student walkout to protest gun violence on the soccer field behind Columbine High School in Littleton, Colo. More than 250 students took part in the short protest at Columbine, the scene of a mass school shooting on April 20, 1999.
Norwich Free Academy freshman Laura Danieluk Garcia, 14, of Griswold, Conn., holds a photo of Marjory Stoneman Douglas High School shooting victim Jamie Guttenburg as she marches with fellow NFA students as part of the National School Walkout in support of students from the school in Parkland, Fla., in Norwich, Conn. Seventeen students and staff were killed in the mass shooting at Stoneman Douglas on Feb. 14, leading high school students nationwide to call for new gun control measures and improved school safety.
Students at Marjory Stoneman Douglas High School in Parkland, Fla., gather after the walkout in honor of the 17 victims killed during the Feb. 14, 2018, shooting there.
Students at Druid Hills High School in Atlanta participate in the National School Walkout.
Ryler Hanosky, left, a senior at Hillcrest High School in Ammon, Idaho, and junior Bret Gillespie, seen behind a flag associated with the alt-right, call for teachers to be armed during a counterprotest, as classmates participate in a walkout to protest gun violence.
Students at Lincoln Park High School in Chicago observe a moment of silence in honor of those killed in the Parkland, Fla., school shooting during a walkout to protest gun violence.
Students join hands as they take part in a student walkout in Lafayette, Ind.
Students at Topeka West High School in Topeka, Kan., lock arms as they stood in their quad for 17 minutes, after walking out of class in protest of gun violence.
Sixth-graders blow 17 notes on trumpets as students from Lusher Charter School participate in a walkout to protest gun violence in New Orleans. Students linked arms with students from neighboring New Orleans Charter Science and Mathematics High School who were wearing signs honoring students killed in school shootings.
Yarmouth High School student Sage Watterson reads a poem she wrote titled "Never Again" during a walkout to protest gun violence in Yarmouth, Maine.
Students hold a sign during a student walkout outside Perry Hall High School in Perry Hall, Md.
Boston-area students chant on the State House steps in Boston during a rally on March 14, 2018.
Students from City High Middle School in Grand Rapids, Mich., hold pictures of victims killed in the shooting at Marjory Stoneman Douglas High School in Parkland, Fla., as they take part in the National School Walkout to protest gun violence.
Senior Salsabel Fares, right, embraces junior Kylea Brady on the football field at Hazelwood West High School outside St. Louis following a tribute to students and teachers killed at Marjory Stoneman Douglas High School.
Freshman Kennedi Lawson, 14, carries a sign at a student walkout at Cherry Hill West High School in Cherry Hill, N.J., in remembrance of those killed in the Parkland, Fla., shooting.
Southside High School students participate in a nationwide school walkout to remember the victims of last month’s shooting in Parkland, Fla.
East Chapel Hill High School students hug as they take part in a student walkout in Chapel Hill, N.C.
Students at Philadelphia High School of Creative and Performing Arts participate in a walkout to address school safety and gun violence.
Students at Weber High School in Pleasant View, Utah, embrace during a school walkout to honor the victims of the Parkland, Fla., school shooting.
Thousands of local students sit for 17 minutes in honor of the 17 students killed last month in the high school shooting in Parkland, Fla., during the National Student Walkout for gun control in front of the White House in Washington. More than 2,000 high school-age protesters observed the 17 minutes of silence by sitting on the ground, their backs turned to the White House, as a church bell tolled. President Donald Trump was not home at the time.
Students at Roosevelt High School in Seattletake part in a protest against gun violence.