Italy head man, Silvio Berlusconi has apparently received a punch to the face from an angry protester.
In my opinion Berlusconi has made a bit of a joke of Italian politics and has to much control of media, judges and other politicians to be trusted with the top political job too. However, I doubt that giving him a split lip is the best way forward.
BBC have covered this here. I'm sure there we will all be sick of this being repeated on the news within an hour.
Edit: It turned out to be a model cathedral which was used as a weapon.