I remember seeing clips of people cheering on the West Bank. I do not remember seeing any Americans cheering, much less thousands of them. That is not to say it did not happen, though. Or, that it did.
I remember there were reports on Muslims celebrating in NJ. I’m from downtown NYC and was there through the whole thing. When I saw those reports I loaded every gun I had and packed all the magazines since I thought the Muslims would be doing what they did in Paris in New York at the time. Maybe not thousands but there were reports at the time from NJ.