The tip-off between the Sacramento Kings and Atlanta Hawks was delayed.
Protesters marched on Sacramento's City Hall, Interstate 5, and the Golden 1 Center on Thursday as they demanded justice for Stephon Clark.
In their initial press release regarding the incident, police said officers were responding to a report of someone breaking vehicle windows near the home where a man, later identified as 22-year-old Stephon Clark, lived with his grandparents and siblings.
As police officers approached Clark, they ordered him to stop and show his hands, but that instead Clark ran toward the backyard away from police.
Investigators found three damaged cars in the neighborhood, police said. When did police officers know the house was his grandmother's house and tell his family? The department released video footage on Wednesday showing the officers yelling that Clark had a gun before firing.
Mr Cahill says he accepts cameras cost a lot, but they could stop more violent situations from occurring. "He loved both of them to death".
Between December 2016 to December 2017, 313 police officers were assaulted and the association says attacks are becoming more violent. "I feel like our lives don't matter to them".
Mayor Darrell Steinberg, according to a report in the Sacramento Bee, said he understood the public's reaction but called for calm.
The body camera footage is dark and shaky. The officers believed the suspect was pointing a firearm at them.
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The site was reportedly bustling with people heading to the facility for their New Year prayers. He said that an investigation into the security breach is underway.
Police allegedly thought Clark had a gun and fired several shots, leaving him on the ground for several minutes before they approached to see if he was all right.
Seth Stoughton, a former Tampa police officer and University of SC law professor, said the officers' body cam footage offered "very little useful visual information" and served mainly as a "powerful reminder" of that type of camera's limits.
The Sacramento shooting could lead some police departments to change their rules, but such policies can be hard to follow in the heat of the moment, said Eugene O'Donnell, a professor at John Jay College of Criminal Justice in New York City. "But that could be more the product of hope than reality", he said, with the officers still in shock and anxious about their own safety. Police had been called to check reports of someone breaking into cars.
The deputies in the helicopter did not capture video of Clark breaking the glass door, Sacramento police spokeswoman Linda Matthew said.
Homicide detectives, Internal Affairs, and Crime Scene Investigation Units responded to the scene to begin the officer-involved shooting investigation. "We have to bring healing to the family", he said.
On Thursday, protestors gathered outside Sacramento's city hall to demonstrate against the killing. He was holding a cellphone.
Footage from body cameras and an overhead helicopter does not clearly depict what Clark was doing just before police opened fire.
In a statement, police said that more audio and video footage would be released "in the near future". The helicopter video does not show the alleged break-in.