News headlines won’t change national culture or policy. The pro-policing subset of America is large and has a lot of dark money supporting. Private prisons and the handful of companies that support them, weapons companies who have seen record profits because we militarized our police after 9/11, and fascist sympathizers and supports all want things like that to happen.
Unless you, me, and everyone else who cares about the issue called our representatives daily to demand action, nothing will change. Even if every single person who wanted police reform in the US called their federal and local representatives demanding change, there is still a good chance the pro-police-brutality club would still have more influence.