Pupils from more than 2,600 education institutions will walk out at 10am Local time, observing a 13-second silence in honour of the students who died 19 years ago.
When was the high school massacre?
On April 20, 1999 senior students Eric Harris and Dylan Klebold went on a shooting rampage at Columbine High School in Jefferson County, Colorado.
The pair murdered 12 classmates and one teacher in what was then acknowledged to be one of the worst mass school shootings in US history.
A further 24 others were injured in the attack, 21 of those hit directly by gunfire.
Harris’ and Klebold’s pre-planned attack involved using nearly 100 explosive devices and diverting emergency services away from the school with a small fire bomb, while they executed fellow students.
The killers then moved through the cafeteria, library and hallways, firing at people at random.
They committed suicide before they could be detained by police.
The rampage provoked huge debates over subcultures, bullying and violence in video games.
Since then, mass school shootings have become frequent across the United States.
What is happening today?
Today US students hope to pressurise lawmakers into tightening up gun control regulations.
Emmy Adams, an 18-year-old senior at nearby Golden High School and protestor said today’s protests were intended to “unite and empower survivors, to stand together”.
A district spokeswoman said Columbine has not held class on April 20 since the massacre so no walkout would take place at the high school.
However, a rally calling for an end to gun violence was held near Columbine High School on Thursday.
An hour before the walkout, officials say a pupil began shooting inside Forest High School in Ocala, Florida.
The suspected shooter, who has since been arrested by police, blasted a pupil in the leg, as reported by Local media.
What about the Valentine’s Day shooting?
The second deadliest public school shooting in US history took place in Parkland, Florida, on February 14.
Referred to as the Valentine’s Day massacre, the shooting left 17 people dead and resulted in a mass student movement against gun violence.
Despite the protests, the gun lobby movement has opposed greater restrictions saying they will take rights away from weapons owners.
Dudley Brown, president of the Colorado-based National Association for Gun Rights, said: “The main objective of these students is to ban firearms completely, and confiscate the firearms of law-abiding Americans. We will oppose them at every step.”
Source : EXPRESS