I didn't see anything antisemitic at the protests. I did see complaints about one group, Finchley Against Fascism, who had posters before the demonstration reading 'Get Fascists, Racists, Nazis, Zionists & Islamophobes Out Of Finchley!' Which I found... off, to say the least. Whatever you think of Israel you might want to extend to Jewish people the same degree of cultural sensitivity you show to other groups, and maybe decide this isn't a time to be grouping Zionism with the above movements given the deep, complex and sometimes ambivalent relationship Jews have with Israel. And the fact is that I'd say most 'Zionists' in Finchley would also stand against fascism, racism, islamophobia and certainly Nazism.