My wife's family comes from a part of Germany that is now Poland. No one complains about the third of Germany that was taken by Poland and the Soviet Union.
Arab leaders know that for their countries to have prosperity, they need freedom. If they have freedom, those Arab leaders won't stay in power. They selfishly put their own desire for power ahead of the well-being of their countries. So, the Arab leaders distract their populations with anti-Israeli, anti-American and anti-Semitic claptrap. That is now threatening to blow up in their faces.