I disagree.

That's an example of strange unsolicited attention from a stranger is perceived as hostile. He could have been pointing a picture of the Virgin Mary at them and gotten a similar reaction.

Interesting experiment, but for the most part I wouldn't expect google glass users to walk up to strangers and record them directly like this.

It's nice to see that expecting any kind of privacy in the US is silly, especially considering the channel has been on for over a year.