Being critical of what Israel is doing right now is completely fine and I am certainly a supporter of the palestinian struggle, but platforming a preacher calling for a "dark day" for all jews is not something that should be supported either. It's a shame that so many people can't seem to differ between jewish people and israel, it just makes it so much easier for israel to hide behind the "antisemitism" argument whenever their actions are called into question. However, antisemitism is still a big issue in the pro-palestinian camp.