Students across US stage massive walkout to protest gun violence

FILE - Students at Roosevelt High School take part in a protest against gun violence Wednesday, March 14, 2018, in Seattle. Politicians in Washington state are joining students who walked out of class to protest against gun violence. It was part of a nationwide school walkout that calls for stricter gun laws following the massacre of 17 people at a Florida high school. (AP Photo/Manuel Valdes)

Jeremy Jacobs, 17, a senior at Marjory Stoneman Douglas, looks at a makeshift memorial, after walking out of school and making his way to Pine Trails Park in Parkland, Fla., on Wednesday, March 14, 2018. Hundreds of students walked out of class in protest of gun violence on the one-month anniversary of the Parkland shooting. (Matias J. Ocner/Miami Herald via AP)

Demonstrators flash peace signs and their fists in the air during a student-led march against gun violence at the Civic Center Plaza Wednesday, March 14, 2018, in San Francisco, one month after a deadly shooting inside a high school in Parkland, Fla. (AP Photo/Marcio Jose Sanchez)

Gabriel Constantino, 17, and his friend, Nikki Healey, 15, pay their respects at a makeshift memorial after they walked out of class at Marjory Stoneman Douglas and made their way to Pine Lakes Park in Parkland, Fla., on Wednesday, March 14, 2018. Hundreds of students walked out of class on the one-month anniversary of the Parkland shooting. (Matias J. Ocner/Miami Herald via AP)

Students their way up East Washington Ave. toward the state Capitol during a walkout to protest gun violence, Wednesday, March 14, 2018, n Madison, Wis., one month after the deadly shooting inside a high school in Parkland, Fla. (Steve Apps/Wisconsin State Journal via AP)

They bowed their heads in honor of the dead. They carried signs with messages like “Never again” and “Am I next?” They railed against the National Rifle Association and the politicians who support it.