This is my opinion on this.
A lot of these guys, have a bigger influence than us and feel they deserve the bigger influence. We here are supporters foreign supporters who may or may not financially help the team, blue mooning to visit the stadium. Whilst these groups buy merchandise, to attending almost and everything Juventus. They have been and always will be there they have a right to feel angry. These are Juventus supporters. How they express it we disagree on but namecalling I dont feel would be the right way to go about it..
Ok that aside it may not be the bulk of them or majority but it they are fan groups who have been there for decades attending almost every match, seriously when say say shit, let them. We may disagree but we are Juventus both the locallers and foreigners.