unfortuately this is the exception rather than the rule, if we're making European comparisons, If Lazio had capitulated at home to Roma in that fashion half the team would have recieved dog turds through the post by now (or within 28 days, depending on postcode)
Er, that's why I said it was the exception rather than the rule in the original post. The point is that unless the fans are willing to change no amount of processes and provisions will shift attitudes. If you can shift attitudes then it is still possible to retain rivalry and deliver a safe environment.