About 10 years ago I first heard about zionism as an ethnic supremacist movement from a jew. I had no opinion on it whatsoever, and decided to ask this friend of mine exactly because he was Jewish. I was curious about history and t religion, which he is knowledgeable about, and the subject went on middle east and Israel. He didn't recognize Israel as an legitimate estate and was horrified by Israel actions against humans rights - surprisingly, including against black jews.
That was a pretty solid ground for me to understand that Israel isn't "the jews", even though it is a (white) jewish based supremacist ethnoestate, just as much as the nazi Germany isn't "the caucasians".
It IS, thought, a state structure with colonizing domination plans, which happen to use ethnicity as a legitimizing card.