Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Sacramento Basketball Star Heads up Stephon Clark Rally by VOA News A former professional basketball player led a rally in Sacramento, California, Saturday, calling for police accountability in the wake of the March 18 police killing of Stephon Clark, an unarmed black man. Saturday's gathering followed a mostly peaceful march Friday by hundreds of demonstrators, hours after an independent autopsy found that Clark had been hit in the back by seven of the eight bullets that struck him, which contradicted police testimony. Security was high for Saturday's demonstration, led by former Sacramento Kings player Matt Barnes, and for a Kings basketball game scheduled for Saturday evening at the local arena, Golden 1 Center. Local media reported the plaza outside the arena would be closed to the public Saturday afternoon and protest signs would not be allowed at the game, which will pit the Kings against Oakland's Golden State Warriors. Dozens of people, including Clark's fiancee, gathered to protest in a downtown Sacramento park Saturday afternoon. Chavez tributes Meanwhile, Saturday was also Cesar Chavez Day, when some states, including California, commemorate the Latino activist who founded a national farmworkers union. Organizers of Sacramento's Chavez march said they also planned to make Clark a focus of their event. On Friday, forensic researcher Bennet Omalu, known for his study of football-related concussions, announced the result of his independent examination, which the Clark family had requested. Omalu said all but one of the bullets that hit Clark had come from the back or side. The one bullet that seemed to have come from the front was found in Clark's left thigh, Omalu said, and likely entered Clark's body after he was already lying on the ground. Clark was shot dead by two officers responding to a nighttime phone call about a man breaking car windows and a glass door. The officers fired on Clark, police authorities said, because they thought he had a gun. But no gun was found on Clark's body. A cellphone was found nearby. The result of the independent autopsy was announced a day after about 500 people had gathered for his funeral. An official report by the county coroner is not expected for several more weeks. 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.