VIEWER DISCRETION ADVISED: Uncut cellphone video of shooting, confrontationNews4Jax crime and safety expert Ken Jefferson said video of crimes like this one can change the landscape of a police investigation. Jefferson said this video is very beneficial to investigators. Arbery’s mother, Wanda Cooper-Jones, explained what a Glynn County police officer told her about how he died. “It’s a very disturbing video," Jefferson said. Officer Michael Slager initially said he used a taser gun on Walter Scott and Scott tried to take it after a traffic stop in Charleston, but the video showed a different story.