Protesters upset over the death of George Floyd in Minneapolis smashed windows and looted several businesses in downtown Oakland, while another demonstration blocked traffic along Highway 101 in San Jose on Friday afternoon.
In a statement Saturday, Gov. Gavin Newsom said: "I want to thank all those who helped protect human life last night and today - from community members who exercised their right to protest peacefully and encouraged others to do the same, to the law enforcement officers who faced what were, at times, challenging conditions. In California and across the country, there are indications that violent actors may be attempting to use these protests for their own agendas. We are closely monitoring organizing by violent extremist organizations ahead of tonight."
A group that started at around 300 people quickly grew to a diverse crowd of well over 1,000 protesters as the event started late Friday, marching down Broadway in the direction of Oakland Police Department headquarters.
Oakland Police declared it "an Unlawful Assembly," announcing multiple officers were injured when projectiles were thrown. People were asked to leave the area and officers began to fire tear gas in an effort to facilitiate their exit.
Eighteen people were arrested by Oakland Police. Outside agencies arrested four people.
Oakland Interim Police Chief Susan Manheimer called on demonstrators to respect the memory of Floyd and to be respectful of downtown businesses, which have been hit hard in recent months due to the COVID-19 pandemic.
The crowd remained hostile and angry, throwing bottles at the police during the demonstration.
Other groups sat in peaceful protest.
Highways were not immune to the carnage in Oakland, either.
At one point, police moved in as a small group of people was trying to set up a vehicle as a barrier.
One San Jose Police officer has been hurt, according to San Jose Mayor Sam Liccardo.
It's estimated up to 300 people were outside of City Hall at one point.
Some protesters were taken into custody. It’s not clear how many arrests have been made.
He's been charged with third-degree murder and manslaughter.