Yeah, speculation is all though. :') The "Palestinians" are merely ethnically undifferentiated Arabs living in Israel, and the name "Palestine" is the modern version of the name hung on Judea after one of the Roman Wars / Jewish Wars, by the emperor, in an effort to create facts on the ground. :')
It was Hadrian I think; when he wasn't retreating from territories conquered by his predecessor Trajan, and building a lifeless city at the site of the drowning of his catamite, he persecuted the Jews because he was offended by the practice of circumcision.
It was. I just read that in Biblical Archaeology Magazine.