>>chrisj+w9
I mean, wearing a body cam all the time is an overkill. That being said, your link does not prove that. The number of people killed by the police is just the tip of the iceberg. There would be an order of magnitude more people being seriously harmed (paralyzed, blinded, etc.) by the police than killed. There would be an order of magnitude more people mildly harmed (bruises, cuts, chipped tooth, etc.) than than seriously harmed.
By the time you get to incidents like police's violent arrest of SNL's Jay Pharoah [0], complete with knee on the neck (fortunately not long enough to kill him), you have potentially hundreds of thousands of people being affected and treated like this every year.
[0] https://www.youtube.com/watch?v=IV5KpbUPeSU