Students walk out of school for National School Walkout in Nashville April 20, 2018.
Students from Washington-Lee High School in Arlington, Va. join the National School Walkout while marching to the U.S. Capitol in Washington, DC. April 20, 2018.
Students, Nariah Marzka, Morgan Orelski, and Travis Burge who joined about 500 other students, 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., April 20, 2018.
Hume-Fogg Academic Magnet High School students walk out of school for National School Walkout in Nashville April 20, 2018.