On June 12 , 2016 , 29-year-old Omar Mateen killed 49 people and wounded 58 others in a mass shooting . The attack was the deadliest single gunman mass shooting in United States history until the 2017 Las Vegas shooting , the deadliest incident of violence against LGBT people in U.S. history , and the second deadliest terrorist attack on U.S. soil since the September 11 attacks of 2001
September 11 attacks
September 11 attacks
Pulse nightclub