The accident happened just before midnight near the intersection of 73rd Avenue and Holly Street.
Police say while the officers were trying to help injured passengers in the other car, a large, angry, crowd formed, preventing them from giving first aid.
"There's plenty of time for you to vent your frustration or whatever, but at that particular moment, you're actually hindering and preventing them from helping the persons you're trying to protect," Oakland Police Officer Roland Holmgren said.
No arrests were made. All of the injuries from the accident turned out to be minor.