Police in a suburb of Portland, Ore., declared a riot Thursday night after around 100 protesters smashed windows and sprayed graffiti in a downtown business area.
The unrest in Tigard, a city of about 48,000 residents, just southwest of Portland, came in response to officers having fatally shot a 26-year-old domestic violence suspect named Jacob Ryan McDuff, according to reports.
"Stop Killing People and We Will Stop Rioting," one spray-painted message read, according to KGW-TV of Portland.
The Tigard police headquarters was also vandalized.
Officers arrested one protester, Zane Saleem Bsoul, 20, charging him with one count of rioting.
The crowd dispersed by around 9:30 p.m. PT.
Officers had shot McDuff during a confrontation while attempting to arrest him, KGW reported.
Arresting officers discovered McDuff had a knife and in the struggle to take him into custody he was shot, the department said.
Anti-police protests have continued nightly in the Portland area for nearly a year.