I think the Muzzies did it by themselves in order to encourage anti-semitism.
Now they claim, that Nazis have dressed up as Jews and attacked their cementary.
Source:
http://ooe.orf.at/stories/311009/However this story is fishy and I am very curious who is really responsible. But I have the assumption, that the Austrian police will not tell us, even if they have caught the responsible persons ...