It's usually okay to discriminate Jews here.
Considering the horrible shit they did against palestina, how exactly is anyone beeing discriminant against jews ?
Its rather the opposite. Here in europe the jewish lobby makes sure that jokes against, or jew unfriendly actions are punished far more then any other nation would, trhiving on the commen guild feeling we have for them.
Slowly, more and more people start to express their idea, that its time to stop abusing the holocause to always get it your way.
On to the point, the insults, are effectively aimed from one ultra group to the other. And (many will disagree here) getting insulted to be a jew needing a speedy ticket to a concentration camp, or seeing people chant for your volcano to have a go again, in their minds is exactly the same.
WHy ? cause they never saw the vesuvius erupt (last=1944). their parents havent seen it, their grandparents had. Getting insulted for beeign a jew that has to die ? Where is the diffrence ?
Ultra's basically tell each other "go fucking die in a fire".
People in Napoli and actual Jews might take offence to it (jews definatly will), but its not aimed at them.