I'm not defending it when it happens but the media wants you to think it happens literally hundreds of times more often than it actually does. It both helps their ratings and meshes with their political views. Has anyone in the media(other than Ben Shapiro which is where I got this info from) pointed out that in 2017 The Washington Post said there were 68 instances of unarmed African-Americans dying at the hands of police in the entire country? Now that is 68 too many but that figure also includes the suicide by cop cases and cases in which they went for the cops guns. That is 68 African-Americans in a country with a population of over 30 million African-Americans so it is not happening everywhere and all the time like the media wants the public to think.
Let's also stop and discuss the level of expectations that we are placing on law enforcement. In whole they deal with tens of thousands of cases where they have to make a split second decision based on extremely limited information and if they get that decision wrong someone (either them, other cops, suspects, or innocent people and bystanders) dies. Granted this didn't apply to George Floyd, there is no excuse for the decisions made there but my overall point is still going to stand. If they shoot when they shouldn't shoot someone dies. If they don't shoot when they should someone dies. And society is trending towards expecting them as a whole to go 10,000 for 10,000 when making those decisions. That is an impossible standard for any profession to obtain no matter what level of training and experience they have. Would anyone do the job they are doing now if everyone doing that job as a whole were expected to make 10,000 important decisions in a row correctly? And what the long term result of these expectations will be is that the better the cop the more likely he is to say "fuck this shit I'm getting a job working as an internal investigator looking into white collar crime cases for some bank or financial company or at the very least a director of security at some factory or shopping mall." Meanwhile the worse the cop the less likely he will have alternative employment opportunities so the more likely he will stay being a cop, knowing that the police unions will do everything in their power to keep him employed. Eliminating instances like George Floyd should be a reasonable goal. Eliminating every single fuck up some cop anywhere in the country makes is never going to be. The only possible way this could happen would be if every police force everywhere in the country went 100% Robocop and who knows if that would even work.