In addition to the conflation of anti-Israel == pro-Palestine, there are a lot of opinions that are cast together and conflated due to the mix of religion, ethnicity, and government.
For example, what is a "Jew hater"?
Does that mean they hate all practicing Jews? Do they hate those of Jewish ethnicity? Do they hate Israel? Do they believe in the existence of the Committee of 300/EoZ?
"Jew hater"/"antisemite" and "fascist" are often mere homographical pejoratives.