I think there would be a serious backlash on American Muslims if they tried something in NYC.
Like last time? Such a serious backlash.
Seriously.
Every muz taxi driver in NYC knows the time and date of the next big one, but not the FBI.
Next time, thank the taxi driver and tell him not to travel to Iran in the next 6 months or take some duct tape if he does.
There wasn't really any backlash after 9/11...I would expect a lot of noise but that's about it...