In Italy the annual Calci Storico Fiorentino had to be halted after 15 minutes when it got too violent. I watched this match and can't decide what was just enough violence and when it crossed into too much violence. The game is an ancient version on rugby and football with 27 man teams trying to score on the opponent's goal by moving the ball forward any way necessary.
It's a far cry from the softened version of the NFL we are used to seeing. Here's a link for some photos from the match and the video version is below CALCIO STORICO FIORENTINO