Realifelurker just be clear about what you are criticising.
Israel = a country full of people with varying views?
The Israeli government?
Zionism = a belief that Jews have the right to live in their own state.? Doesn't mean they agree with Israeli government, or are anti Palestinian rights.
Jews = an ethnoreligion comprising people with varying views on anything and everything. Not all rich, white or European.
Judaism = the religion of (some) Jewish people.?
Easy if you remember it's like the differences between Arab, Palestinian, Muslim, Islam, Gaza, Jihadism.
So, antisemitic: zionism = nazism, Israel is white settler colonialism, Jews should go back to where they came from, Jews need to decide whose side they're on, Israelis are aping Hitler.
Not antsemitic: Netanyahu should be in fucking prison, Netanyahu and Hamas need each other, settlers currently attacking Palestinians are evil, we still need a two state solution.