“The $1,500 device, which displays Web content on a tiny screen, signals its wearer as a likely member of an affluent tech elite. And Glass also can discreetly shoot photos or video, which some people view as invasive. That’s caused unease for some folks and, in some cases has led to arguments, altercations and even attacks against people wearing the technology. It’s relatively new for Glass to be targeted, either over privacy concerns or as a presumed symbol of the tech industry as a whole. In late February, a woman says she was attacked at a bar on San Francisco’s famous Haight Street after fellow patrons began heckling her and trying to rip Glass off of her face.”
http://www.cnn.com/2014/04/14/tech/mobile/google-glass-attack/