What I'm saying is that once there is crowd trouble, it doesn't really matter what the fans' opinions are, or why they're causing trouble. Some fans will find any reason to cause trouble. I'm sure some would fight over somebody insulting Ke$ha's music if that allowed them the excuse to throw some flares.
I don't know what needs to be done in Italy with regards to this, but clearly there is a problem. You don't see this happening in England or Germany.
But hey, some fans like to deny problems because they're simply cheerleaders.