Anti-Semitism has at times taken the form of vilification of Zionism, the Jewish national movement, and incitement against Israel.
Findings of Congress, footnote in USC22sec2731
http://uscode.house.gov/quicksearch/get.plx?title=22§ion=2731
Full post next bread.
Basically if it weren't for Nazis (or Mossad agents) like this we wouldn't need an Ambassador to Combat Anti Semitism.