Beating Jews and firing rockets at Jews for the reason of them being Jewish is antisemitic. Despite Hamas absolutely being antisemitic, launching rockets at an occupying state killing your people is not. Americans criticizing their government for giving money to a foreign etnostate attempting genocide, also not antisemitic.
Hope that cleared things up fascist!
Communism is a form of socialism. If you think socialism is a single ideology, then you've only read the spark notes for either.