I agree such probable hoaxes are terrible. As usual, I'm sticking with my rule that this is a hoax until proven otherwise.
Hoax? Why would anyone do such except if full of hatred toward Jews?
Either in order to get sympathy for themselves, or to direct blame towards the right, or most likely some combination of the two (see the example I give in the post immediately above yours).
This kind of behaviour has been going on since forever. In the 17th century this kind of attention seeking personality might have made accusations of being a victim of witchcraft, or might hoax up some evidence for witchcraft. That was the crime that generated the most hysteria so that was the crime they picked. In our own age its hate crime. The fact that this sort of hoax hurts jewish people by making them afraid is incidental to the perps' main purpose of generating sympathy and hysteria.