It would introduce some basic humanity into the situation. It would be a form of accountability.

> What would be different about these people if their faces were visible?

I mean, if you agree there's no difference, then we should prefer transparency? You're going to have to make the case for why they should cover their face, since the default for law enforcement for the last 200+ years has been to show their face.

Yes, that's what I'm asking! Can you answer my question? :)