Police responded to a demonstration in San Francisco's Mission district on Sunday morning that may have been caused by Saturday afternoon's officer-involved shooting.
An angry crowd gathered near 16th and Valencia streets shortly before 1 a.m. Officers in riot helmets were in the area, and police said the officers helped facilitate the walking demonstration.
Bystanders said the crowd had gathered in response to Saturday's shooting, when a 19-year-old man was fatally shot by police in the city's Bayview neighborhood.
"They're rioting because people are pissed," one woman said.
The suspect, who was shot at Oakdale and Third streets at 4:45 p.m., was pronounced dead at 7 p.m., according to a police spokesman.
The shooting occurred when two uniformed officers were conducting a fare inspection on a Muni light rail vehicle. They detained a suspect on the platform, but he fled on foot.
During the foot pursuit, the suspect allegedly fired at the officers, and the officers fired back, police said.
The officers were not injured.
The shooting is being investigated by the District Attorney's Office and the Office of Citizen Complaints as well as by the Police Department.