The Israeli Foreign Ministry says that pro-Hamas rallies could devolve into attacks on Jews; 2 injured in Jerusalem terror shooting.
Leftist / Islamist attacks on Jews and synagogues have taken place in America, the UK and in some of Western Europe (France has banned all pro-Hamas protests), however, it seems unlikely they would happen in NZ as most Leftist hatred here is aimed at the Israeli government. But Sydney and Melbourne where Islamists are numerous are a different matter.