Gay night club massacre in Orlando, Florida, June 12, 2016: 29-year-old US citizen Omar Mateen opened fire at Pulse gay nightclub in downtown Orlando, killing 50 people and injuring at least 53. He was eventually shot by a SWAT team after briefly taking some hostages.
The massacre has become the deadliest in recent US history.
The Virginia Tech Shooting, April 16, 2007: 23-year-old student Seung-Hui Cho, a senior at Virginia Tech, goes on a shooting spree on the campus of Virginia Polytechnic Institute and State University in Blacksburg, Virginia, killing 32 people and wounding 17 others in two separate attacks (another six people were injured escaping from classroom windows).
The attack is the second deadliest shooting incident by a single gunman in US history. It was the deadliest mass shooting in the US until the Orland nightclub massacre.
The shooter, Seung-Hui Cho then committed suicide.
Sandy Hook Elementary School in Newtown, Connecticut, December 14, 2012: 20-year-old Adam Lanza fatally shoots 20 children aged between 6 and 7 years old, as well as six adult staff members, injures one.
Prior to driving to the school, Lanza shot and killed his mother at their Newtown home. As first responders arrived at the scene, Lanza committed suicide by shooting himself in the head.
The incident is the deadliest mass shooting at a high school or grade school in US history.
The Luby's shooting in Killeen, Texas, October 16, 1991: The perpetrator, George Hennard, crashes his pickup truck through the front of a Luby's Cafeteria. After exiting the truck he immediately shoots and kills 23 people, and wounds 27 others before shooting and killing himself.
The San Ysidro McDonald's massacre in the San Diego neighborhood of San Ysidro, July 18, 1984: 41-year-old James Huberty, shoots and kills 21 adults and children and injures 19 others at a local McDonald’s before being fatally shot by a SWAT team sniper.
The Inland Regional Center in San Bernardino, California, December 2, 2015: Syed Rizwan Farook and Tashfeen Malik, a married couple living in the city of Redlands, target a San Bernardino County Department of Public Health training event and holiday party, of about 80 employees, in a rented banquet room. 14 people were killed and 22 were seriously injured.
After the shooting, the couple flees in a rented sport utility vehicle (SUV). Four hours later, police caught up with their vehicle, killing them in the resulting shootout.
The Edmond post office shooting in Edmond, Oklahoma, August 20, 1986: part-time mail carrier, Patrick Henry Sherrill, armed with three handguns, pursues and shoots twenty co-workers, killing 14 of them and injuring 6 in 10 minutes, and then taking his own life with a bullet to the head.
Fort Hood military base, near Killeen, Texas, November 5, 2009: Maj. Nidal Malik Hasan, a US Army major and psychiatrist, kills 13 people and injures 32 during a shooting rampage. He is convicted and sentenced to death. The shooting produced more casualties than any other on an American military base.
The Binghamton shootings, in Binghamton, New York April 3, 2009: Jiverly Wong, a naturalized American citizen from Vietnam, kills 13 people and injures four during a shooting at the American Civic Association immigration center. He then kills himself.
The Columbine High School massacre in Littleton, Colorado, April 20, 1999: 18-year-old Eric Harris and 17-year-old Dylan Klebold kill 12 fellow students and one teacher before committing suicide in the school library. They injured 21 additional people, and three more were injured while attempting to escape the school.