At the mass shooting at the Pulse Nightclub in Orlando , FL in 2016 , the perpetrator was Omar Mateen who in a 9-1-1 phone call swore allegiance to the leader of the Islamic State of Iraq and the Levant ( ISIL ) , Abu Bakr al-Baghdadi , and said the U.S. killing of Abu Waheeb in Iraq the previous month " triggered " the shooting . Pulse was hosting a " Latin Night , " and thus , most of the victims were Hispanic . It is the deadliest incident of violence against LGBT people in U.S. history and the deadliest terrorist attack in the U.S. since the September 11 attacks in 2001 . At the time , it was the deadliest mass shooting by a single shooter in the U.S. , being surpassed by the Las Vegas shooting a year later
Las Vegas shooting
2017 Las Vegas shooting
Homonationalism