They didn’t kill millions, my dude, in any point in time. And Palestinian nationalism literally developed as a response to Zionism. Pan Arabism was very much the order of the day until the 48 war. Do you not understand how the fellahin had their land sold out from under them by the landed Arab gentry living in Beirut? There’s plenty of blame to go around, but feel free to pretend that the Jews are the only reason the Palestinians are in the position they are today.