Why a debate over how to define Antisemitism has reached the United Nations?

Among the letter’s signatories are three Canadian organizations: Independent Jewish Voices Canada, Canadians for Justice and Peace in the Middle East and United Jewish People’s Order of Canada.

https://www.thestar.com/news/canada/2023/04/13/why-a-debate-over-how-to-define-antisemitism-has-reached-the-united-nation.html