At a minimum, watch 100 videos. I did last night, only took about an hour, it's easy to find some to nitpick, some which are ambiguous ... and plenty that are totally horrifying.
If you can watch 100 videos in a row from Greg Doucette's list and say, "the militarization and use of force tactics of US law enforcement are not a problem" then I'd like to hear why you think so given this evidence.
Otherwise you're not speaking from an honest grappling with what these videos contain.
If you see a single restaurant chain use horrible ingredients for humans, trans fats, far too many preservatives, high fructose corn syrup, over and over, you should never eat there again. I've personally cut out mcdonalds, and the fast food garbage restaurants. It doesn't mean every restaurant is bad, it means some restaurant models are bad. I still eat shawarma, I still eat indian and thai, and my family still owns an italian restaurant where we also don't try to poison our customers with horrible ingredients.
If you're comparing police to restaurants, then let me ask you, then on a scale of Taco Bell to El Buli, where does the current american system police system lie on the scale? I'd argue it's more like at the dumpster outside of your local mcdonalds.