Homicide

Ex-soldier kills 5 officers in Dallas, setting US on edge

  • Chris Bailey walks by a makeshift memorial on Griffin Street holding a sign that reads, "Everybody Love Everybody", Friday, July 8, 2016, in Dallas. (AP Photo/Tony Gutierrez)

    Chris Bailey walks by a makeshift memorial on Griffin Street holding a sign that reads, "Everybody Love Everybody", Friday, July 8, 2016, in Dallas. (AP Photo/Tony Gutierrez)  (The Associated Press)

  • Law enforcement personnel walk near evidence markers at the scene of the police shootings in Dallas, Friday, July 8, 2016. Five police officers are dead and several injured following a shooting during what began as a peaceful protest in the city the night before.  (AP Photo/Gerald Herbert)

    Law enforcement personnel walk near evidence markers at the scene of the police shootings in Dallas, Friday, July 8, 2016. Five police officers are dead and several injured following a shooting during what began as a peaceful protest in the city the night before. (AP Photo/Gerald Herbert)  (The Associated Press)

  • An FBI evidence response team works at the scene of the police shootings in Dallas, Friday, July 8, 2016. Five police officers are dead and several injured following a shooting during what began as a peaceful protest in the city the night before.  (AP Photo/Gerald Herbert)

    An FBI evidence response team works at the scene of the police shootings in Dallas, Friday, July 8, 2016. Five police officers are dead and several injured following a shooting during what began as a peaceful protest in the city the night before. (AP Photo/Gerald Herbert)  (The Associated Press)

A black Army veteran upset about fatal police shootings of black men and bent on exterminating white police officers killed five lawmen in a sniper attack that layered new anxiety onto a nation already divided about guns and how police treat African-Americans.

Micah Johnson, who donned a protective vest and used a military-style semi-automatic rifle, was killed by a robot-delivered bomb after the Thursday evening shootings, authorities said. It marked the deadliest day for U.S. law enforcement since the Sept. 11, 2001, terrorist attacks.

In all, 12 officers were shot just a few blocks from where President John F. Kennedy was slain in 1963.