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.
Police don't have a centralized authority. And it really depends on how big the chain restaurant is if 100 videos would have it shut down.
The better argument is that each one of those restaurants would be exposed and either they would put in enough effort to show they have improved or people would stop eating there. You can't boycott your local police.