You're changing the subject. You made a claim about the Palestinians, not the "world's Muslim population." It is well known that Palestinians celebrated en masse, with the possible exception of Hanan Aswari and some others bright enough to understand the implications. If you are not aware of the ample documentation of this fact, I suggest you do some research before you make the claim again.
A significant percentage of the "world's Muslims" did not celebrate the attack on the United States, although, disturbingly, a small but significant minority did, and a huge percentage of Palestinians certainly did.
You made a claim about the PalestiniansOoops, I think we found the culprit! I was not considering just Palestinians in my statements. There's where we missed each other.