Footage captured by local station Channel 10 shows a sheriff's vehicle approach with lights flashing as protesters marched in the street.
She couldn't move her head and she has a prior medical condition, according to Cleveland's friend Ava Nadal, who witnessed the incident. Cleveland's injuries were not life-threatening. The Sacramento Bee reported that the sheriff's vehicle left the scene after hitting Cleveland.
Video from the scene, taken by legal observer Guy Danilowitz, shows two police cars, sirens and lights on, surrounded by protesters who are chanting and marching at a vigil honoring Clark and other victims of police shootings.
The death of Clark, a father of two, was the latest in a string of killings of black men by police that have triggered street protests and fuelled a renewed national debate about bias in the US criminal justice system. "Get away from my auto", more protesters gathered on the left side of his vehicle. After a few moments, the police cruiser slowly pulled forward just when a woman emerged from the crowd in between the vehicles. "It appears from all evidence that he hit her intentionally". Is my life not that important?
"I heard wheels spin".
While discussing whether to perform CPR, one officer said: "Hey, mute". "Police have to be better than this".
Black Lives Matter and other protests over police violence have always been dogged by conspiracy theories that protesters were paid to incite violence and discontent. The incident took place near the intersection of 65th Street and Florin Road in the South Sacramento neighborhood where Clark was shot and killed by police officers last month.
Clark's death on March 18 has sparked days of protest in the California capital and rejuvenated the controversy over police shootings of unarmed black men. The police department is also carrying out an internal review.
The findings were released amid growing protests in California's capital city over the death of Clark, who was shot in his grandparents' backyard by officers responding to a call about a suspect breaking vehicle windows.
An autopsy commissioned by his family shows most of the eight bullets fired struck Clark in the back, contradicting police's version of events.
"The narrative that they've (Sacramento police) painted does not match the autopsy that we see today", said Rashid Sidqe, member of the Law Enforcement Accountability Directive. "From the time this investigation began, statements provided by the Sacramento Police Department have proven to be self-serving, untrustworthy, and unreliable", he said, according to BuzzFeed.
"This independent autopsy affirms that Stephon was not a threat to police and was slain in another senseless police killing under increasingly questionable circumstances", Benjamin Crump, an attorney for the Clark family said.