I believe that Proud Asian Guy is talking on a more local level. I have yet to deal with it myself, but i have heard stories of small secluded incidents.
On a happier note, I am very happy to find more people here in Japan! I personally have just recently picked up interest in cosplay, but have been a fan of not only anime, but Japan as a whole for as long as I can remember... I guess my Japanese grandmother helped a bit with that huh? XD