Phoenix saw more protests on Friday as demonstrators took to the streets to protest the killings of George Floyd and Arizona resident Dion Johnson, a black man who was shot and killed by an Arizona Department of Public Safety trooper on Monday.

Protesters marched to the Phoenix police headquarters and were met by calls from police to disperse when they arrived. Phoenix PD fired tear gas into the crowd and used flash bangs to try to disperse the protestors, according to NBC Phoenix affiliate KPNX.

Police in Oakland, California, declared a protest unlawful Friday night after "multiple officers were injured when projectiles were thrown."

"We are requesting people to leave the area," police said in a tweet shortly before 10 p.m.

Protesters in Oakland also made their way onto a freeway and shut down traffic, NBC Bay Area reported.

Protesters in Minneapolis lit fires at a Shell gas station, Wells Fargo Bank and a U.S. Post Office building Friday night as thousands of people swarmed the city despite a curfew. 

NBC affiliate KARE 11 News tweeted photos and videos of the fires, plus images of law enforcement officers marching in formation towards a police precinct. 

The unrest dissolved another night of looting, jumping in front of cars and starting fires throughout the city.

"All of our hearts are breaking that this is happening in our state," said KARE anchor Julie Nelson.