On July 7, 2016, Micah Xavier Johnson ambushed and shot police officers in Dallas, Texas, killing five, injuring nine others, and wounding two civilians. Johnson, a 25-year-old Army Reserve Afghan War veteran, was angry over police shootings of black men. He shot the officers at the end of a protest against the recent killings by police of Alton Sterling in Baton Rouge, Louisiana, and Philando Castile in Falcon Heights, Minnesota.
Johnson fled to a building on the campus of El Centro College, where police killed him several hours later with a bomb attached to a remote-controlled bomb disposal robot. It was the first time U.S. law enforcement used a robot to kill a suspect.
The shooting was the deadliest incident for U.S. law enforcement since the September 11 attacks, surpassing two related March 2009 shootings in Oakland, California, and a November 2009 ambush shooting in Lakewood, Washington, each of which killed four police officers and the gunmen. It was the second-deadliest targeted attack of U.S. law enforcement officers in history; and the largest since the Young Brothers massacre of 1932 killed six officers in Missouri.
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