This site talks about reasons why the league should enforce laws against excessive fighting and obvious acts of violence. This would be a good site if you are arguing against felony charges for violent hockey players. It says that visors should remain optional and that the players already understand the risks they are taking when they step out on the ice. The director of operations for Ohio States men's basketball team has been charged with domestic violence and disorderly conduct. Studies believe that much of behavior of soccer crowds and violenece is premeditated, not spontaneous.
Soccer is a great sport.
It could do without the outrages. These make this sport not as attractive to the watcher. This article examines if athletic violence should go to court. The article lists a number of violent acts of sport that have never stood up in court. It discusses minor league players, Boulerice and Trboyevich, who were both facing criminal charges for violence in hockey.