When do US police use deadly force? Mr Castile had been stopped in Falcon Heights, a suburb of St Paul, because the car had a broken rear light, the woman, identified in local media reports as Diamond Reynolds or sometimes as Lavish Reynolds said.
Before he was shot, he had told the officer that he was d to carry a concealed gun and had one in his possession, she said. He was just getting his licence and registration, sir," Ms Reynolds says in the video.
Police said an investigation was under way and the officer involved had been put on leave. Mr Castile's mother, Valerie Castile, told CNN that her son was just "black in the wrong place" and said there was "a lookng war against African-American people".
Later on Thursday, an emotional Ms Reynolds told protesters outside the governor's house that she had filmed the incident so "the world knows that these police are not here to protect and serve us, they are here to assassinate us". Mr Castile, 32, worked as a cafeteria supervisor at a Montessori school. His cousin Antonio Johnson told the Star Tribune newspaper he was "immediately criminally profiled" because he was black.
Former officer Michael Slager facing murder charge Laquan McDonald - year-old was holding a knife but appeared to be moving away from police in Chicago when shot 16 times in Officer Jason Van Dyke denies murder charge Michael Brown Sexy housewives seeking nsa Worcester Massachusetts year-old shot at least seven times in Ferguson, Missouri, in Augustsparking nationwide protests.
Officer Darren Wilson cleared of wrongdoing Eric Garner - died after being placed in a chokehold by New York police while selling cigarettes in July Grand jury decides against charges, police disciplinary action taken against supervising officer Sgt Kizzy Adonis A second piece of video from Baton Rouge emerged on Wednesday appearing to show Mr Sterling being held down and then shot several times, although some shots are heard when the camera moves away from the confrontation.
Seconds later, one of the officers is blavk removing an object from the man's trousers as he lies on the ground with blood on his chest. A witness said he saw officers take a gun from Mr Sterling's pocket after the shooting, but police have not commented on this.
Use of lethal force Officers can only justify firing their weapons at civilians if they fear the loss of life or limb Other options include verbal commands, use of empty hands to control a suspect, and use of less lethal weapons such as batons or pepper spray A Supreme Court case found it was illegal to shoot at fleeing felons.