If you've watched the world cup at all you've probably noticed that the players benches are protected by clear enclosures. This strikes me as a capitulation to the hooliganism that's given soccer fans - particularly in Europe I think - a bad reputation. I don't really think emotions run any less high in American football stadiums, but I haven't noticed any sort of shield protecting the players. Any fan who threw something at a player would be thrown out of the game and - I expect - charged with a crime. Apparently that's not the case in Germany.