Sure, it's been going on for a long time. Close to a million Palestinians were expelled (or fled) from Israel after its founding, and close to a million Jews we

Sure, it's been going on for a long time. Close to a million Palestinians were expelled (or fled) from Israel after its founding, and close to a million Jews were expelled (or fled) from various Muslim-majority countries around that time. The former is known as the Nakba (as you highlight) and well known. The latter, not so much.