They demanded criminal charges be brought against the two cops, Jared Robinet, who is Caucasian, and Terrence Mercadal, who is Black.
Dr. Bennet Omalu, a medical examiner hired on behalf of Clark's family, presented his findings to reporters Friday, saying that most of the officers' bullets entered the 22-year-old unarmed black man from behind and from his side.
Omalu also said that each of the bullets found in Clark's back "independently possessed a fatal capacity" and that Clark took up to 10 minutes to die. Bodycam footage of the incident released by Sacramento police last week showed officers did not immediately render aid after firing at Clark.
On the evening of March 18, Clark, 22, was fatally shot in his grandmother's backyard when officers mistook his cell phone for a gun.
"This independent autopsy affirms that Stephon was not a threat to police and was slain in another senseless police killing under increasingly questionable circumstances", Crump said in a statement. An eighth bullet went into Clark's thigh.
The Sacramento Police Department said in a statement that it would have no further comment on the case until after the release of the findings of an official autopsy by the county coroner, and a review by state and local prosecutors.
The shooting occurred March 18.
Two police officers were dispatched to the Meadowview neighborhood in South Sacramento on March 18 to investigate a report that someone was breaking auto windows in the area. They also released video from the officers' body cameras and a police helicopter. "Fearing for their safety, the officers fired their duty weapons striking the suspect multiple times", a statement said. Protesters have taken to the streets almost every day to call attention to his killing and have called on the city's leadership to fire the two officers involved in the shooting.
The shooting has produced almost daily angry but peaceful protests in the downtown area of California's capital city.
That's prompted angry but peaceful protests, including some that twice blocked thousands of fans from getting into Kings games.
The shooting sparked widespread protests in California and NY and responses from Black Lives Matter, the NAACP and the Sacramento Kings basketball team.
"I want the folks in California to know that there's nothing wrong with how these young people are standing up", he thundered. "They're asking for you to stop being violent to them", Sharpton said.
The autopsy was done at the request of Clark's family. Others on the stage attempted to calm him, with limited success.
"This brother could be any one of us, so let them express and grieve", Sharpton said. "Please give us justice".
About 200 demonstrators squared off with police in riot gear overnight in California's capital and more protests are planned for Saturday, after an autopsy on Stephon Clark contradicted the police account of the shooting of the unarmed black man. On Wednesday, White House Press Secretary Sarah Sanders was asked about the Clark shooting and demurred, referring to it as a local issue.
The Kings and their owner have supported the family.
West Sacramento resident Onyeabo Aduba, 33, said he canceled reservations Thursday at a restaurant near the arena for his girlfriend's birthday because of the protests. "It's our job to bear some of that pain, and to help translate the anguish and grieving and the historic pain [of black communities] into tangible and real change".