(CNN)Portland, Oregon, the epicenter of recent demonstrations against police brutality and systemic racism, heads towards its 100th straight night of protests Saturday.
In just the last week:
- A supporter of a right-wing group was shot and killed there during clashes between pro-Trump groups and left-wing demonstrators.
- On Thursday, the man suspected in that death was killed while police tried to take him into custody.
- Late Friday night, police arrested 27 people and declared an "unlawful assembly" after some in the crowd threw rocks at officers.
- Now, more protests are planned for Saturday and the coming days.
Police said Friday's protest march started about 9:45 p.m. local time, with some people in helmets, gas masks and armored clothing. They arrived at the Portland Police Association, many chanting, "Burn it down," police said.
Photos: The protests in Portland
Photos: The protests in Portland
A protester passes a dumpster fire in Portland, Oregon, on Saturday, September 5. Saturday marked the 100th night of protests in the city since the death of George Floyd in late May.
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Oregon state troopers and Portland police advance through tear gas and fireworks while dispersing a protest on September 5.
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A protester holds his hands out in front of a police line during a protest on September 5.
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A protester runs away from chemical irritants fired by police to disperse protesters outside the Portland Police Association building on September 5.
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A police officer stands guard outside the Portland Police Association building on Friday, September 4.
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Police disperse a crowd after protesters set fire to the Portland Police Association building early in the morning on August 29. (Editor's note: Part of this photo has been blurred because of profanity.)
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Aaron Danielson is treated by medics after being shot on August 29. Danielson — who Portland police said was shot in the chest — died. A suspect in Danielson's shooting was shot to death by police as they attempted to arrest him on September 3.
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Police officers try to move protesters back on August 21.
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Portland police officers arrest a man said to be a street medic during a dispersal outside the Immigration and Customs Enforcement (ICE) detention facility on August 21.
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People watch a protest pass by on August 20.
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Demonstrators march to the ICE building on August 19.
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Federal officers are seen in the streets of Portland on August 19.
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A demonstrator uses a shield for protection on August 19.
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Portland police face off with protesters on August 16. Police said two officers were hospitalized after protesters allegedly threw a nearly 10-pound rock at them.
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A protester screams at police during a standoff at a Portland precinct on August 15.
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Photos: The protests in Portland
A protester is treated by a street medic after a police officer used pepper spray on him on August 14.
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Photos: The protests in Portland
Portland police walk past a dumpster fire while dispersing a crowd of protesters on August 14.
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A protester is detained in front of the Portland Police Bureau's North Precinct on August 11.
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A protester slaps his shield while marching toward the Portland Police Bureau's North Precinct on August 10.
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Photos: The protests in Portland
Portland police officers walk through the Laurelhurst neighborhood after dispersing a protest of about 200 people on August 8.
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Photos: The protests in Portland
Protesters march through the streets after rallying at the Mark O. Hatfield United States Courthouse on August 2. (Editor's note: Part of this photo has been blurred because of profanity.)
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Protesters hold their fists in the air during a march on August 1.
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Protesters gather at the Justice Center and federal courthouse on July 31.
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A protester holds up an American flag in front of federal officers on July 30.
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A demonstrator flashes peace signs at federal officers on July 29.
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Protesters blow back tear gas with leaf blowers on July 29.
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Police and federal officers walk through the street on July 28, deploying tear gas and other methods to disperse protesters.
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The "Wall of Moms" protest group marches with other demonstrators on July 28.
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A protester stands in front of the Mark O. Hatfield US Courthouse on July 28.
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Federal officers attempt to clear the crowd on July 27.
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Protesters demonstrate on July 26.
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A protester inspects a torn-down fence outside the federal courthouse on July 26.
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A person protests outside the Mark O. Hatfield US Courthouse on July 25.
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A federal officer monitors the protests on July 25.
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Protesters gather in a street filled with tear gas on July 25.
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A protester raises a fist on July 25.
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Federal officers deploy chemical irritants on July 24.
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A demonstrator stands in front of agents outside the federal courthouse on July 24.
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A federal officer fires crowd-control munitions at demonstrators on July 24.
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In this image made from video and released by Jonathan Maus, Portland Mayor Ted Wheeler, center, stands near a courthouse fence as tear gas engulfs the area on July 23. Wheeler had joined crowds to listen to protesters and answer their questions in response to violent clashes between demonstrators and federal forces.
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A federal officer tries to disperse a crowd on July 22.
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A person protests on July 22.
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Smoke fills the area as federal officers try to disperse protesters on July 22.
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A federal officer pushes back demonstrators at the US courthouse on July 21.
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Protesters hold signs on July 21.
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A Black Lives Matter protester burns a sign outside the courthouse early on July 21.
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Hundreds of people shine light from their cell phones during a protest on July 20.
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Federal agents use crowd-control munitions to disperse protesters at the courthouse on July 20. Officers used tear gas and projectiles to move the crowd after some protesters tore down a fence fronting the courthouse.
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Mothers and fathers participate in a downtown demonstration on July 20.
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Protesters move fencing in front of a federal courthouse on July 18.
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People join a rally at Portland's Justice Center on July 17.
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Federal agents try to push back demonstrators on July 16.
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The mother of injured protester Donovan LaBella, who was shot in the head with an impact munition by federal officers, pleads with police during a protest outside the Portland Police Association building on July 13.
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Black Lives Matter supporters demonstrate in Portland on July 4.
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People play instruments on July 3 as they mourn the death of Elijah McClain, a 23-year-old Black man who was killed by police in Colorado last year.
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Protesters face off with police on June 30.
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Hundreds of high school students mark Juneteenth with speeches and a rally in Terry Schrunk Plaza on June 19. The Juneteenth holiday commemorates the end of slavery in the United States.
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Trash cans burn during demonstrations on June 15.
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Kayla Washington speaks to protesters June 12 who want to disarm campus police officers at Portland State University. Kayla's father, Jason, was killed by campus police in 2018.
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People take part in the 10th day of protests on June 6.
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Thousands of protesters fill Pioneer Square on June 1.
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Protesters lie down on the Burnside Bridge during a moment of silence on June 1.
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A man holds a mirror in front of police guarding the Multnomah County Sheriff's Office on May 30.
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Protesters start a fire in the street on May 29.
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Protesters gather in Terry Schrunk Plaza on May 29, days after George Floyd's death in Minneapolis.
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Shortly before midnight, police announced over a loudspeaker, "This has been declared an unlawful assembly. All persons immediately leave the area. Failure to adhere to this order may subject you too arrest, citation or the use of crowd control agents including but not limited to tear gas and, or impact weapons."
Video from the scene, shot by CNN affiliate KPTV, showed officers in tactical gear moving into the streets to disperse crowds. Around midnight, officers could be seen handcuffing someone on the ground and appearing to make arrests.
Police said most of the people arrested were charged with interfering with a police officer and disorderly conduct.
Months of protests have led to damaged buildings, injured police and protesters, and the arrests of hundreds.
Portland protesters march after the killing of Jacob Blake in Wisconsin last month.
Portland officials have been calling for an end to the protests.
Police Chief Chuck Lovell said this week that gun violence is up and some 911 calls are going unanswered.
New York Times reporter Mike Baker has been on the ground in Portland and told CNN's Chris Cuomo Monday that where there were once thousands of protesters in the city, this week has now seen about 150.
The protests against police brutality and racial injustice began after the death of George Floyd in Minneapolis while police custody in late May. They picked up steam after Wisconsin police shot Jacob Blake. Then last Saturday night, amid the clash between protesters and Trump supporters, came the fatal shooting of Aaron Danielson.
The right-wing group Patriot Prayer publicly mourned his death.
