http://news.nationalpost.com/news/canada/pro-gaza-rallies-worldwide-tainted-by-anti-semitism-calgary-organizer-to-apologize-f

from 2014. 

"CALGARY — One of the organizers of a pro-Palestinian protest in Calgary last Friday plans to apologize publicly to pro-Israeli demonstrators who were beaten up during the event.

It was just one of a growing list of marches across Canada and around the world that are being tainted by violence and anti-Semitic slogans.
On the weekend, the authorities banned protests in some areas of Paris, citing security concerns. Several recent pro-Palestinian demonstrations have boiled over into violence.

This month, several hundred protesters tried to storm two synagogues during an anti-Israel demonstration, chanting “Death to Jews!” and “Hitler was right,” said Serge Cwajgenbaum, secretary general of the European Jewish Congress, a Brussels-based organization representing European Jewry."