BERKELEY, Calif. >> Hundreds of protesters angered at the killing of unarmed black men by white police officers marched through downtown Berkeley streets for a fourth straight night, briefly blocking traffic on a highway and delaying metro and train services.

Organizers of a protest planned for Wednesday morning in Oakland said they expect hundreds of white people to come out and help shut down a federal building.

“As white people, we are outraged by the constant and ongoing violations against black people’s lives from Ferguson to Oakland to San Francisco to Cleveland to Staten Island,” said Jason Wallach of Showing Up for Racial Justice, one of the organizations involved in the demonstration expected to be replicated in 27 cities.

In Berkeley, protesters stopped at City Hall late Tuesday, where a city councilman addressed the crowd and said he will ask for an investigation into the police response to the protest Saturday, when the latest wave of demonstrations began.

Bay Area Rapid Transit’s downtown Berkeley and McArthur stations were closed as a precaution Tuesday night, and Amtrak train service was suspended between the Oakland Coliseum station stop and Richmond because of the protest. A scheduled Berkeley City Council meeting was canceled after threats to disrupt it, Mayor Tom Bates said.

The crowd, which was much smaller than the one Monday, briefly shut down state Route 23, which connects Berkeley to Oakland.

A California Highway Patrol official had said 80 percent of its available staff would be deployed to monitor the protest after a crowd of about 1,500 blocked all lanes of Interstate 80 and halted an Amtrak train Monday night.

The agency arrested 223 people Monday on suspicion of resisting arrest, obstructing police and other charges, said Ernie Sanchez, assistant chief of the CHP’s Golden Gate Division. Berkeley police arrested an additional nine people.

They face bails of up to $50,000, and many remain in custody, he said.

“The CHP respects the public’s right to gather and demonstrate, but it needs to be done in a safe manner,” Sanchez said. “At this point, they’ve made their statement, and we respect that. Now we’re asking them to stop.”