An 18-year-old boy killed 19 students and two teachers at an elementary school in Texas, US, on Tuesday, May 24. He had also killed his grandmother before attacking his grandmother. Soon after the incident, the shooter was also shot dead by responding police officers. The incident has shocked the country and the world, reigniting the debate over more restrictions on gun use in the US. Earlier, such an incident was taken place four years ago in the US. What is the history of attacks on schools in the USA? Watch this video to know.
