CNN) — From the streets of California to the shopping malls of New York, protesters are making sure no one forgets the case of Eric Garner.

But some are choosing to do so more violently than others.

Demonstrators flooded a highway in Oakland, California, prompting a heated standoff in the freeway between protesters and California Highway Patrol.

Some threw explosives, bottles and rocks at officers, authorities said.

Officers responded by deploying gas and arresting eight protesters.

Gurpreet Heer, a student at the nearby University of California at Berkeley, said he saw people throwing glass and rocks at police.

“People were vandalizing police cars and jumping on the cars,” Heer said.

Police said five patrol cars had been damaged.

In the city of Berkeley, some protesters looted and vandalized businesses late Sunday night, police spokeswoman Jennifer Coats said.

Read more of this story at