US

Wednesday morning protest in Oakland peaceful following 4 nights of large protests in Berkeley

  • Protesters hold signs in front of the federal building in Oakland, Calif., Wednesday, Dec. 10, 2014. Bay Area residents gathered in Oakland as part of a protest against a grand jury decision in Missouri and carried signs that said "Black Lives Matter" and "White Silence Equals Violence." (AP Photo/Terry Chea)

    Protesters hold signs in front of the federal building in Oakland, Calif., Wednesday, Dec. 10, 2014. Bay Area residents gathered in Oakland as part of a protest against a grand jury decision in Missouri and carried signs that said "Black Lives Matter" and "White Silence Equals Violence." (AP Photo/Terry Chea)  (The Associated Press)

  • Toppled merchandise rests on the floor of a Pak N Save supermarket looted by anti-police protesters on Tuesday, Dec. 9, 2014, in Emeryville, Calif. Several hundred demonstrators marched for the fourth consecutive day with some occupying a freeway and looting at least two stores. (AP Photo/Noah Berger)

    Toppled merchandise rests on the floor of a Pak N Save supermarket looted by anti-police protesters on Tuesday, Dec. 9, 2014, in Emeryville, Calif. Several hundred demonstrators marched for the fourth consecutive day with some occupying a freeway and looting at least two stores. (AP Photo/Noah Berger)  (The Associated Press)

  • California Highway Patrol Officer Hatzenbuhler keeps protesters marching against police violence from storming Interstate 980 on Tuesday, Dec. 9, 2014, in Oakland, Calif. Several hundred demonstrators rallied for the fourth consecutive day with some occupying a freeway and looting a supermarket. (AP Photo/Noah Berger)

    California Highway Patrol Officer Hatzenbuhler keeps protesters marching against police violence from storming Interstate 980 on Tuesday, Dec. 9, 2014, in Oakland, Calif. Several hundred demonstrators rallied for the fourth consecutive day with some occupying a freeway and looting a supermarket. (AP Photo/Noah Berger)  (The Associated Press)

A small group of demonstrators tried unsuccessfully to shut down Oakland's federal courthouse Wednesday following four nights of large, often violent protests in Berkeley against the killings of black men by white police officers.

About 50 nonviolent protesters blocked the courthouse's front and back entrances, but employees entered through side doors.

The protest involved white community members who joined religious leaders under the message "white silence equals violence, black lives matter."

Protesters have rallied for weeks following grand jury decisions not to indict a Ferguson, Missouri, officer in the killing of Michael Brown and a New York City officer who was seen on video applying a fatal chokehold on Eric Garner.

The protest was quiet compared to activity a night earlier.

Authorities arrested at least 19 people in the East Bay area Tuesday night. Berkeley police arrested five adults and one juvenile, and the California Highway Patrol apprehended 13 others.

Protesters briefly blocked traffic on state Route 24, which connects Berkeley to Oakland, and some hurled rocks, projectiles and incendiary devices at CHP officers, a spokesman said.

A police spokesman in nearby Emeryville said some protesters threw bottles and chunks of concrete at officers and damaged some stores.