Depends on the setting. If it's a bunch of people out having a good time, they probably wouldn't care. But, if I'm working somewhere or talking on the phone and somebody puts a camera right up to me to record what I'm doing, I'd be annoyed by it.
I think you're naive to think that you or any countrymen would be pleased by having a camera held very close to your face, following you around, especially if you're doing something that you consider intimate or private -- like having a quiet phone conversation away from other people or talking on a pay phone.
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There's a guy in one of the videos who is at a Starbucks having what I assume is a business conversation, and he asks pretty politely, "Can you kindly not record me?" And the guy doesn't listen, he just continues. This happens a few times throughout all of the videos, and I think that's where you draw the line between a social experiment and common decency. The reason we allow banks, super markets, the government, and so on, to record us without explicit permission is because we are using their services and we submit to their system of surveillance, which we assume provides some benefit to us by proxy. However, there is almost zero presumed benefit of being intimately recorded by a complete stranger on the street, and a distinct number of reasons why you wouldn't want to be recorded (eg, you don't know what this footage is going to be used for).