I don't want to generalize but I will - this is a feature of most Americans. They don't seem to know a lot of the history of the countries outside the US. Even the college-educated folks seem to know the last 100 years of history at best.
Another issue that I think started in the US but has spread everywhere is that one's view on everything, including history is partisan. So history is interpreted based on political beliefs not on facts (as much as we can know facts in a field like history).
It seems that the radical left, by default, supports anyone who's 'a victim' whether self-proclaimed or left-proclaimed seemingly without an ounce of logic.
I don't know the Israel-Palestine history well enough to comment on the conflict itself but it's more complicated than good-guy vs bad-guy for sure. The best and nuanced perspective I read on this to date is by a Palestinian who has worked on the ground to try to bring peace to the region - https://www.facebook.com/mea.damscena
Thank you for your perspective, I enjoyed reading your piece 🙏