Transcript for Police Officer Charged in the Shooting of Philando Castile
We do move onto other news this Wednesday night, and to that deadly police shooting, the horror seen by millions on Facebook. The police officer involved now charges with manslaughter. The moments after the shooting, livestreamed on Facebook by the driver's girlfriend. On the video, she can be heard begging her boyfriend not to die. Fill land doe Castille did not survive, and tonight, that officer learning of the charges. Here's ABC's Steve osunsami. Reporter: Let's first say this tonight -- that police officers across the country risk their lives every day for the public good. I told him not to reach for it, I told him to get his hands up. Reporter: But in this police shooting, that set the streets on fire near St. Paul, Minnesota, prosecutors say it's the officer who is the criminal. No reasonable officer would have used deadly force under these circumstances. Reporter: On top of manslaughter for killing philando Castille, officer Jeronimo Yanez is facing two felony firearm charges for endangering the safety of both diamond Reynolds, who recorded the live video, and her 4-year-old daughter who was crying in the backseat. You shot four bullets into him, sir. He was just getting his license and registration. Reporter: Reynolds and her boyfriend both told the officer that Castille had a legally-owned gun in his pocket. Today, police announced that he never had a chance to remove that gun before he was killed. They found it at the bottom of that pocket. In police radio traffic that night, you hear the moment the family is pulled over. I have reason to pull it over. The two occupants just look like a -- people that were involved in a robbery. Reporter: And you hear what many feel is the sound of racism. The driver looks more like one of our suspects just because of the wide-set nose. Reporter: Tonight, police say the family had nothing to do with the robbery. Diamond Reynolds says that manslaughter isn't nearly enough. I feel as though that murder to the highest extent of the law is what would be appropriate here. At the end of the day, none of that is going to bring my boyfriend back. Reporter: The officer is expected to enter a plea of not guilty at a court appearance on Friday. His lawyer argues that the issue wasn't race, that it was the gun. David? Steve osunsami with us tonight. Steve, thank you.
This transcript has been automatically generated and may not be 100% accurate.