Catholic Man, the cause for vast "anti-Semitism" (anti-Jewness) boils down to simple math: Jews both inspired and contradict 2 huge faiths which followed - Christianity and Islam. Members of those 2 faiths have often had to deny validity to Jews/Judaism in order to validate their own faiths, for many hundreds of years. With such a huge proportion of humanity doing so, it is only odds that Jew-hate would develop into such a widespread phenomenon, no matter what Jews do or don't do.
Gunmen in Egypt kill guard outside Niger embassy (Reuters)
from the article: FM Tzipi Livni condemns Belarusian President's anti-Semitic remarks