Anne Frank wrote, on April 11, 1944 in her diary:
“Who knows — it might even be our religion from which the world and all peoples learn good, and for that reason and that reason alone do we now suffer. We can never become just Netherlanders, or just English, or representatives of any other country for that matter. We will always remain Jews.”
Anne Frank stressed that Jews have something of special value to give to the world, and that is precisely what the world has resented.
The Talmud (Tractate Shabbos 69) cites the source of anti-Semitism using a play on words: The Torah – the source of the Jewish system of laws, values and moral standards – was received at Mount Sinai. The Hebrew pronunciation of “Sinai” is almost identical to the Hebrew word for “hatred” – sinah. “Why was the Torah given on a mountain called Sinai?” asks the Talmud. “Because the great sinah – the tremendous hatred aimed at the Jew – emanates from Sinai.”
At Sinai Jews were told that there is one G-d, Who makes moral demands on all of humanity. Consequently, at Sinai the Jewish nation became the target for the hatred of those whose strongest drive is to liberate mankind from the shackles of conscience and morality.
(drawn from “Why the Jews?” seminar: http://aish.com/seminars/whythejews)