On July 7 , 2016 , multiple shots were fired at a peaceful protest in downtown Dallas , held against the police killings of two black men from other states . The gunman , later identified as Micah Xavier Johnson , targeted police officers , killing five and injuring nine . Two bystanders were also injured . This marked the deadliest day for U.S. law enforcement since the September 11 attacks . Johnson told police during a standoff that he was upset about recent police shootings of black men and wanted to kill whites , especially white officers . After hours of negotiation failed , police resorted to a robot-delivered bomb , killing Johnson inside El Centro College
September 11 attacks
September 11 attacks
History of Dallas