And if you ask fans in Italy, you will find there is a belief (which may or may not be justified) that Juve have, more often than not, been the beneficiaries in these controversial games for as long as anyone can remember, which is where the problem comes from.
Coming at this from the point of view of an Aberdeen supporter who is thoroughly accustomed to seeing Rangers (Old and New) and Celtic getting some ludicrously favourable refereeing displays, I can't find it in me to entirely condemn the reaction of the likes of Roma to the perceived injustices over the years (though Roma and Fiorentina in particular go on about these things a bit too much and I wonder if it undermines their chances of winning).
What interests me in the Italian reaction is that the Italian media machine swings into action to stoke up the hatred of Juve.
When Rangers or Celtic get decisions in their favour here, the national press will do exactly the opposite and try to deflect attention away from the controversial decisions.