“...9/11.. has been an unofficial holiday for muslims around the world.”
You’re absolutely right. And in this country on every 9-11 since, when the news channels replay original 9-11 footage in real time, you can bet that muzzies in America are gathered around their flatscreens, in their homes & out of sight of the hated Kuffar.
And when the footage finally shows the collapsing of the Twin Towers, the muzzies scream “Allahu Akbar!!!” and start dancing like monkeys.
That’s my belief anyway.