That's practically a Black Mirror episode, and I would hope that everyone can see this, but judging from this comment thread, that's clearly not the case. Disturbing.
OJ was tried criminally and was found not guilty (I assure you the state of California has more money than OJ, yet he prevailed).
OJ was then sued civilly for wrongful death by the Goldman’s (OJ probably had more money than the Goldman’s) and yet the Goldman’s prevailed in the civil suit.
You asked what the difference was with the social media post vs. TV: The difference is that COPS, etc., don't want to be sued, so they get releases, because they realize that they could potentially be sued (and sometimes for good reason!) I sincerely doubt the person in the post signed a release from Amazon.
If you argue that it's technically legal, the OP wasn't specifically arguing that either.
> Even if one claims the video is fine (and I'd disagree), it's still a very very very bad idea for Amazon, or any large company, to be enforcing the law and conducting mass shaming via advertising.