Maybe it's because Jews dont integrate into societies, they just stick out and have to be different, they dont help others but just themselves, and then again if they did help anyone they would probably ask for more money back or something else back. Jews have always been like this, and this just cannot be accepted, that is why they have never had a real home. When they set off to claim their 'original' land (Modern Israel), they were hated even more. I guess the course of action the Jews take throughout history have made them a very hated people.