According to the BBC:
"the incident took place on 30 June in the remote town of Pio XII"
http://www.bbc.co.uk/news/world-latin-america-23215676
I doubt this little village has ever seen a gringo tourist or ever will, WC games or not. (You can't imagine what "remote" means in that part of the country. Even "major highways" have families of donkeys and pigs wandering down the middle of them. And I have traveled in that part of the country, so I speak from experience.)
Makes one wonder what else some of the media gets wrong and how it influences the spin put on certain stories. No info on the local vendettas that might have brought this incident on because the "reporters" or whoever picked this story up for the world media outlets (???Yahoo New Zealand Sports??? whatever that is) probably can't even speak Portuguese to interview anyone.
So are you really doing a service here to any future foreign visitors by blowing this further out of proportion as it effects their possible safety in Brazil?
Much ado over nothing.