The officers who died at the Dallas protest:
Among the police officers killed is Brent Thompson, 43, who was the city's first mass-transit officer killed in the line of duty since DART's formation in 1989. He joined the department in 2009, according to a statement released by the agency.
Thompson was a newly-wed, having married a fellow officer just two weeks ago.
Dallas Police Officer Patrick Zamarripa was also killed in the shooting last night. His father, Rick Zamarripa, posted on Facebook:
"My son is a police officer in Dallas he was working there the rally in downtown where my son was shot and killed by a sniper along with four other police officers ... Need prayers to get through this."
His Twitter account includes this description:
Addicted to the thrill of this job. I own the night. I love my Country, Texas, Family, God, Friends, and Sports! Don't Tread on Me! 'Merica