This is a valid argument when speaking of encryption, but I don't see how it makes any sense in this context.
If I am not under investigation I shouldn't be monitored end of discussion.
If I am under investigation, then if my case has not reviewed by a third party (judiciary power/judge) then I also shouldn't be monitored.
It's basic human nature. Without checks and balances those who can abuse, will abuse. It doesn't matter which side they are on.
Property owners doing so on their own land is a whole different matter.
I just don't see it happening at a widespread scale yet. On the other hand if you give police the right to use these technologies you can bet you'll see police (and other government agencies piggybacking off them) deploying this everywhere very fast.
The issue I see is that surveillance is because so miniaturized and easy that I'm not sure if it will be possible to enforce these laws against "the bad guys".
Ideally we should deploy technological countermeasures that prevent anyone from doing mass scale facial recognition. But failing that it may really be better to just have a free for all.