Updated at 8:30 p.m.

Demonstrators blocked traffic Wednesday in downtown Portland in protest of grand jury findings on the fatal police shooting of a black man last month.

A small group of demonstrators said they wanted justice for Patrick Kimmons. They stood in the street as cars honked and tried to make their way past.

Police moved patrol cars to block off Southwest Fourth Avenue and Madison Street intersection and the Third Avenue and Main Street intersections.

The protest later moved to Portland City Hall. The demonstration was over by 5:15 p.m.

It didn’t appear the protester was hurt. A small police presence is on hand; I think the driver kept going. Testy interaction with another driver here. Video: pic.twitter.com/KtqXLKKvMu — Jim Ryan (@Jimryan015) October 31, 2018

Kimmons was killed by police shortly after 3 a.m. Sept. 30 in a downtown Portland parking lot. Portland police Wednesday released video of the shooting after a Multnomah County grand jury found no criminal wrongdoing by the two Portland police officers involved.

The grand jury, which met over two days, found the shooting of Kimmons by Sgt. Garry Britt and Officer Jeffrey Livingston was justified.

The officers said Kimmons was running toward them with a gun when they fired 12 rounds, killing him. Kimmons was struck nine times, police said.

Letha Winston, Kimmons' mother, was among the protesters.

"The verdict is not justifiable," she said. "I'm gonna fight for my baby. How could you shoot a man after he already laid down flat. The video I've seen in the D.A.'s office his hands was up."

I asked Letha Winston, Kimmons’ mother, what’s she wants the public to know. Her response: pic.twitter.com/Kt4uS9uSp4 — Jim Ryan (@Jimryan015) October 31, 2018

During the protest, Arthuray Dudley, a man who identified himself as Kimmons' older brother, was hit twice by a car but appears to not have sustained serious injuries.

Mark Dickerson

Police pulled over a truck, cuffed the driver and put him in a police vehicle, though it wasn't immediately clear if it was related to the protester being hit.

Mark A. Dickerson, a 55-year-old Portland man, was later identified as the driver of the Chevrolet 2500 pickup involved in the incident. Police said Dickerson was booked in the county jail on suspicion of fourth- degree assault, reckless endangering and reckless driving.

Dickerson later told The Associated Press that he had business at the courthouse and was trying to park when a man jumped in front of his truck.

Warning: Graphic language in video below

The man who was hit by the truck recounts the run-in (one bit of graphic language): pic.twitter.com/nyvf4zk30Q — Jim Ryan (@Jimryan015) October 31, 2018

-- Jim Ryan and Andrew Theen