Across the United States today, students participated in walkouts, staging demonstrations to protest gun violence one month after the deadly shooting in a Florida high school. Organizers said as many as 3,000 walkouts were planned, as young people gathered outside their schools, gave speeches, or took to the streets, increasing pressure on lawmakers to tighten gun control and increase school safety. In Washington, D.C., thousands gathered to observe 17 minutes of silence in honor of the 17 victims of the Florida shooting.

1. Brandon Gonzalez, 16, leads fellow students in protest during a class walkout from the Richard R. Green High School of Teaching while participating in the national school walkout in Manhattan, New York City, on March 14, 2018.
Andrew Kelly / Reuters
2. Students gather on their soccer field during a 17-minute walkout protest at the Stivers School for the Arts in Dayton, Ohio, on March 14, 2018.
John Minchillo / AP
3. Students from Douglas Freeman High School walk out of school to protest gun violence in Richmond, Virginia, on March 14, 2018.
Steve Helber / AP
4. Students participate in a march in support of the national school walkout in the Queens borough of New York City on March 14, 2018.
Shannon Stapleton / Reuters
5. Students from Miami County Day School walk out of their school to protest gun violence in Miami Shores, Florida, on March 14, 2018.
Marta Lavandier / AP
6. Students fill the grounds outside Montclair High School, 12 miles from midtown Manhattan, during a walkout one month after 17 Florida students were shot dead, in Montclair, New Jersey, on March 14, 2018.
Bernadette Baum / Reuters
7. Thousands of local students march down Pennsylvania Avenue to the U.S. Capitol during a nationwide student walkout in support of gun control in Washington, D.C., on March 14, 2018.
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8. Thousands of local students sit for 17 minutes in honor of the 17 students killed last month in a high-school shooting in Florida, during a nationwide student walkout in support of gun control in front the White House in Washington, D.C., on March 14, 2018.
Saul Loeb / AFP / Getty
9. Thousands of local students sit for 17 minutes in honor of the 17 students killed last month in a high school shooting in Florida. They sit in front of the White House, on March 14, 2018.
Saul Loeb / AFP / Getty
10. Bethesda Chevy Chase students Alia Berry-Drobnick and Sam Blank gather with other students outside the White House as they join thousands of students across the country who walked out of classes to call for for stricter gun laws on March 14, 2018.
Jim Bourg / Reuters
11. Amanda Welch, 18, from New Jersey, and co-president of the school's Social Justice Council, poses for a portrait outside the front of The American School in London. She took part in a 17-minute walkout on the school playground, which was attended by approximately 300 students, aged 14 through 18, on March 14, 2018.
Matt Dunham / AP
12. Students participate in a march in support of the national school walkout in the Queens borough of New York City on March 14, 2018.
Shannon Stapleton / Reuters
13. A student from Fiorello H. Laguardia High School wears a "Stop Shooting" message on his face during the national school walkout in the Manhattan borough of New York City on March 14, 2018.
Mike Segar / Reuters
14. A Henrico County motorcycle officer looks over students from Douglas Freeman High School as they walk out of school to protest gun violence in Richmond, Virginia, on March 14, 2018.
Steve Helber / AP
15. Diamond Bryant, center, a freshman at James Ferris High School, walks with classmates during a student walkout on March 14, 2018, in Jersey City, New Jersey.
Julio Cortez / AP
16. Students from Harvest Collegiate High School form a circle around the fountain in Washington Square Park in New York to take part in a national walkout to protest gun violence one month after the shooting in Parkland, Florida, in which 17 people were killed, on March 14, 2018.
Timothy A. Clary / AFP / Getty
17. Students from Fiorello H. Laguardia High School lie down on West 62nd street in support of the national school walkout in Manhattan on March 14, 2018.
Mike Segar / Reuters
18. Students walk out of Marjory Stoneman Douglas High School as part of a nationwide protest against gun violence on March 14, 2018, in Parkland, Florida.
Lynne Sladky / AP
19. Pat Gibson holds a drawing of Meadow Pollack, a victim of the Marjory Stoneman Douglas High School shooting, as she stands outside of the school as part of a nationwide protest against gun violence, on March 14, 2018, in Parkland, Florida.
Lynne Sladky / AP
20. Students wear #ENOUGH pins as they gather on their soccer field during a 17-minute walkout protest at the Stivers School for the Arts in Dayton, Ohio, on March 14, 2018.
John Minchillo / AP
21. Students from Westglades Middle School walk out of their school as part of a nationwide protest against gun violence in Parkland, Florida, on March 14, 2018.
Lynne Sladky / AP
22. A student from Fiorello H. Laguardia High School holds a small red paper heart during the national school walkout in Manhattan on March 14, 2018.
Mike Segar / Reuters
23. Students hold a sign during a student walkout outside Perry Hall High School in Perry Hall, Maryland, on March 14, 2018.
Patrick Semansky / AP
24. Students at Philadelphia High School of Creative And Performing Arts participate in a walkout to address school safety and gun violence on March 14, 2018, in Philadelphia, Pennsylvania.
Jessica Kourkounis / Getty
25. Students from Fiorello H. Laguardia High School hold hands as they sit down on West 62nd street in support of the National School Walkout in Manhattan on March 14, 2018.
Mike Segar / Reuters
26. Students hold signs at Georgetown University in Washington, D.C., on March 14, 2018, during a national walkout to protest gun violence.
Nicholas Kamm / AFP / Getty
27. Yarmouth High School student Sage Watterson reads a poem she wrote, titled "Never Again," during a walkout to protest gun violence in Yarmouth, Maine, on March 14, 2018.
Robert F. Bukaty / AP
28. Students at Yarmouth High School participate in a walkout to protest gun violence on March 14, 2018, in Yarmouth, Maine. Leaders of the rally address the crowd from the back of a pickup truck in front of the school. Yarmouth is one of the few schools in Maine that did not cancel school on Wednesday as the state digs out from the third major winter storm in two weeks.
Robert F. Bukaty / AP
29. Students wear #ENOUGH pins as they gather on their soccer field during a 17-minute walkout protest at the Stivers School for the Arts on March 14, 2018, in Dayton, Ohio.
John Minchillo / AP
30. Students from Fiorello H. Laguardia High School sit down on West 62nd street in support of the national school walkout in Manhattan on March 14, 2018.
Mike Segar / Reuters
31. Students from James Ferris High School assemble outside of the school during a student walkout on March 14, 2018, in Jersey City, New Jersey.
Julio Cortez / AP
32. Washington, D.C., high-school student Sara Durbin joins with other students walking out of classes to demand stricter gun laws outside the U.S. Capitol on March 14, 2018.
Jim Bourg / Reuters
33. Students walk out of Marjory Stoneman Douglas High School as part of a nationwide protest against gun violence on March 14, 2018, in Parkland, Florida.
Lynne Sladky / AP
34. A student from Fiorello H. Laguardia High School holds a sign in support of the national school walkout in Manhattan on March 14, 2018.
Mike Segar / Reuters
35. Students rally in front of the White House in Washington, D.C., on March 14, 2018. Students walked out of school to protest gun violence in the biggest demonstration yet of the student activism that has emerged in response to last month's massacre of 17 people at Florida's Marjory Stoneman Douglas High School.
Carolyn Kaster / AP