Earlier quoted context omitted.
Expectation of privacy. Roads are mostly public, Google Glass can go all kinds of places
You will absolutely get into some kind of trouble (social or legal) if you put a camera on a sidewalk and start filming whoever goes by. On the other hand CCTV cameras don't receive any flak. Society is usually not obviously consistent about privacy matters. The ultimate determining factor is what seems creepy vs what is necessary. So its entirely possible that some societies might decide that the video taping done b…
In the US, you won't get in any legal trouble for doing this. You do have certain restrictions on what you can do with the images you capture, though.