The worst part of the whole right of return argument is that they want the right for not only those who left to return, but their families and decendents. If they were allowed the Jews in Israel would end up a very small minority in that land, and then you would see Genocide on a scale not seen since WWII. In the area anyways.
Not to mention that there are plenty of Islamic countries where I can't even set foot..... notice how people only yell racism about the Jewish State.