It's a shame they're doing that, but I don't think it's gonna affect the brand of Juventus so much as some people think. Educated people, at least, will realize that it's more of a cultural problem in Italy and beyond. It's an italian problem, and a transnational problem. All italian clubs have some racists among their ultras, and you'll find that in other countries as well.
I'm not saying that this shit is OK, I'm just saying that I don't think a whole lot of people will point their fingers at Juventus and say: "Juventus is a racist club."