Nisour Square massacre
16 September 2007
The Nisour Square massacre occurred on September 16, 2007, when employees of Blackwater Security Consulting (now Constellis), which was a private military company contracted by the United States government to provide security services in Iraq, shot at Iraqi civilians, killing 17 and injuring 20 in Nisour Square, Baghdad, while escorting a U.S. embassy convoy. The killings outraged Iraqis and strained relations between Iraq and the United States.