Dallas shote protest over police killings

[Breaking news update, posted 11:22 p.m. ET]
Three Dallas Area Rapid Transit (DART) officers have been shot in downtown Dallas, according to agency spokesman Morgan Lyons.

[Previous story, posted at 10:55 p.m. ET]
Shots were reported fired in downtown Dallas on Thursday night during a protest over shootings by police of black men in Louisiana and Minnesota, CNN affiliate KTVT said.
Two Dallas officers were shot, KTVT reported. CNN could not immediately confirm that information.
The shooting happened as protests were underway about two blocks from Dealey Plaza.

The information said the crowd suddenly sprinting away. Clarissa Myles said she eating at McDonalds when the chaos began.
"Everyone was screaming, people were running," she said. "I saw at least probably 30 shots go off."
"I was walking next to the officer who was helping with the protest, all of a sudden I saw six to eight shots," one witness told the station. "It looked like two officers went down."
Another witness who was at the protest told the station he heard multiple gunshots.
"Whoever was shooting had an assault rifle — and I know guns. The shots were in rapid succession," the witness said.
Video showed numerous police officers crouching behind vehicles. Others approached a location holding protective shields.

[Previous update, posted at 10:41 p.m. ET]
The shootings occurred as Americans across the nation vented their anger over the police killings of two black men in two days.
They chanted outside the governor's residence in St. Paul, Minnesota, miles from the spot where an officer killed Philando Castile in a car on Wednesday while a 4-year-old girl sat in the back seat.
Crowds milled in the streets outside the convenience store in Baton Rouge, Louisiana, where Alton Sterling was fatally shot while police grappled with him in a parking lot Tuesday.
Protesters briefly shut down the Dan Ryan Expressway in Chicago. In New York, 1,000 people marched down Fifth Avenue and a few scuffled with police officers.
They all came out to vent their rage at yet more slayings of black men at the hands of police officers.
"We are targets!" LaRhonda Talley said in an impassioned speech in Minnesota about the danger of being black in America. "We made it across the (Atlantic). We made it to freedom and you're still killing us. You're still hanging us from trees. You're still killing us! Our lives matter!"