As the U.S. reels from another school shooting, much of the public discussion has centered on the lives lost: 19 children and two adults. Indeed, the massacre at Robb Elementary School in Uvalde, Texas is the second deadliest such incident on record, after the shooting at Sandy Hook Elementary School in 2012.
Since the Columbine massacre in 1999 in which two teenagers killed a dozen students and one teacher, at least 185 children, educators and others have been killed by gun violence at American schools, according to figures compiled by The Washington Post.
