According to Fox news
More than a dozen rioters were arrested late Saturday in Portland, Ore., as crowd members threw cans, bottles and other objects at law enforcement officers, authorities said.
The rioting was underway in the downtown area, with the state’s largest city now seeing more than four months of daily and nightly protests, vandalism and violence.
Crowd members became “hostile to officers trying to clear the street” for vehicular traffic, prompting the arrests, the Multnomah County Sheriff’s Office wrote in Twitter messages.
Update from the Unified Command: A mass gathering on SW 3rd Ave. & SW Main St. has been hostile to officers trying to clear the street, which is open to traffic. During multiple attempts to disengage, full cans, rocks and other objects were thrown at officers.
— Multnomah Co. Sheriff’s Office (@MultCoSO) September 27, 2020