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.
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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 ...