@oralloy,
I remember that, there were a lot of British Muslims in the audience, not "leftists," whatever that's supposed to mean.
I don't know anyone who was dancing around in glee after 9/11 but quite a few thought that after America had funded IRA atrocities over here some chickens were bound to come home to roost.
I notice you had to look outside of the US for an example, and a poor one at that. Despite what your propaganda says, the rest of the World doesn't love America and doesn't see 9/11 as the global catastrophe you like to portray it as. There was no glee in the Question Time special but a lot of justified anger about America's appalling treatment of the Palestinians, its support for dictators and the occupying troops in the ME.
What is most telling about 9/11 is the way Americans reacted, and it's fairly clear that they could never have endured the Blitz like we did.