The thing that shocks me is that people seem to describe so many of these incidents, yet they just seem to have passed by with little fallout. At least none was described in the article. In most circles of independent minded, proactive people (like those in the OSS scene) that I have moved in, such blatant acts of sexual assault would lead to a massive commotion, probably violence. How can you walk up behind a strang…
What is the point of getting into a potentially life-threatening situation just to teach a jerk a lesson?
As for less drastic responses, I agree that the best way to enlighten people would probably be when caught in the act. It seems unlikely that "photograph upskirt guy" is reading this article and just now it dawns on him "maybe I shouldn't have been doing that".