[hangphyr]

Depends on how it's used. For example it could be useful for people protesting authoritarian governments, such as in Hong Kong. For blurring rioters during a crime spree, I don't think there's anything moral to be gained from protecting criminals.

[downerending]

Though I'm on the side of the Hong Kong citizens, I doubt this would help much, since the government is going to have extensive videos of their own. Not to mention a likely capability to capture immediately or almost immediately off of people's phones.

On a somewhat related note, I wonder if the thousands of people being recorded committing various crimes in the US right now realize that their faces are almost certainly being compiled in various government and private databases, to be matched via facial recognition for the rest of their lives. Yeah, not necessarily a good thing, but am I wrong?