Move two million Palestinians?

An interesting article in the WSJ today bky Dhume.

It retells the story of forced migrations in the recent history.

1947 India, muslims moving to Pakistan and Hindus moving to India, 18 million people moved, two million killed in conflict. 1920 Greece and Turkey agreed to a population swap. 1947 Ethnic Germans moved from Czechoslovakia and the Soviet Union back  to Germany.  1970 Uganda expelled Indians.

1947-9 in Israel 700,000 Palestinians left, either voluntarily or by force, during the war started by the surrounding Arab states, a smaller number stayed.

Yet, the hysteria is only about Israel. Could it be that the UN,many European nations and progressives in this country have a double standard? Could it be?