The attacks on 9-11-01 had a devastating impact on the economy. Have you forgotten? Another such attack, or worse, could seriously cripple our economy. Do you deny this?
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Anyone can deny this, as it is extremely deniable.
It did NOT have a 'devastating effect' on the economy. It did cause a temporarily slump of about 18 months on the stock market. I ask you: did you buy fewer groceries during the week after 9-11? Did you buy laundry soap, did you continue in your job, did you refuse to buy shoes or medicine or other necessities? Did you close your bank accounts and put the money under the mattress?
Within the following year it was used as a pretext to start a bogus war and to allow many of your freedoms to be taken away. Now you can be snooped on without a warrant, for example.